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https://www.readbyqxmd.com/read/27922734/population-pharmacokinetics-of-ceritinib-in-adult-patients-with-tumors-characterized-by-genetic-abnormalities-in-anaplastic-lymphoma-kinase
#1
Ying Hong, Vanessa Q Passos, Pai-Hsi Huang, Yvonne Y Lau
Ceritinib is a second-generation selective and potent oral anaplastic lymphoma kinase (ALK) inhibitor approved for ALK-positive advanced non-small cell lung cancer previously treated with crizotinib. Population pharmacokinetic (PK) analysis was performed to describe the PK of ceritinib and was used to evaluate the covariate effects on systemic exposure at its label dose (750 mg orally once daily). Ceritinib concentration-time data from 4 clinical studies were described by a 1-compartment model with delayed first-order absorption and time-dependent elimination...
December 6, 2016: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27922682/gene-expression-profiles-of-cyp24a1-and-cyp27b1-in-malignant-and-normal-breast-tissues
#2
Naghmeh Zhalehjoo, Yadollah Shakiba, Mojtaba Panjehpour
Active vitamin D has several antitumor effects, including prodifferentiative, antiproliferative and proapoptotic functions in a number of tissues via its binding to vitamin D receptor. The 24‑hydroxylase (CYP24A1) and 1‑hydroxylase (CYP27B1) enzymes are considered to be pivotal determinants of the local concentration of active vitamin D. The aim of the present study was to investigate the mRNA expression levels of the CYP24A1 and CYP27B1 genes in malignant and normal breast tissues. The tumor and adjacent normal tissue samples of 30 patients with breast cancer were acquired from the Iran National Tumor Bank, Imam Hospital (Tehran, Iran)...
December 6, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27922540/prognostic-value-of-quantitative-pet-ct-in-patients-with-a-nonsmall-cell-lung-cancer-and-another-primary-cancer
#3
Xuee Zhu, Chuanhong Liao, Bill C Penney, Feng Li, Mark K Ferguson, Cassie A Simon, Tianming Wu, Haiyan Liu, Yonglin Pu
OBJECTIVE: The staging and management of patients with newly diagnosed nonsmall cell lung cancer (NSCLC) in the setting of recently diagnosed other (metachronous or synchronous) primary cancer are challenging. This retrospective cohort study was carried out to test our hypothesis that baseline 2-deoxy-2-[F]fluoro-D-glucose (F-FDG) PET/CT parameters, including whole-body metabolic tumor volume (MTVWB), total lesion glycolysis (TLGWB), and maximum standardized uptake value (SUVmaxWB), are associated with the overall survival (OS) of such patients...
December 2, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27921393/the-role-of-the-microvascular-network-structure-on-diffusion-and-consumption-of-anti-cancer-drugs
#4
P Mascheroni, R Penta
We investigate the impact of microvascular geometry on the transport of drugs in solid tumors, focusing on the diffusion and consumption phenomena. We embrace recent advances in the asymptotic homogenization literature starting from a double Darcy, double advection-diffusion-reaction system of partial differential equations that is obtained exploiting the sharp length separation between the intercapillary distance and the average tumor size. The geometric information on the microvascular network is encoded into effective hydraulic conductivities and diffusivities, which are numerically computed by solving periodic cell problems on appropriate microscale representative cells...
December 6, 2016: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/27921286/-18-f-fdg-pet-ct-to-differentiate-malignant-necrotic-lymph-node-from-benign-cystic-lesions-in-the-neck
#5
Peymaneh Abadi, Allan Johansen, Christian Godballe, Oke Gerke, Poul Flemming Høilund-Carlsen, Anders Thomassen
OBJECTIVE: Patients presenting with cystic lesions in the neck without obvious signs of malignancy constitute a diagnostic challenge since fine needle aspiration is often insufficient and a diagnosis may not be reached until surgical resection/biopsy is performed. The differential diagnosis of a cystic cervical mass comprises a variety of benign conditions, but malignancy must be ruled out. We examined the diagnostic performance of fluorine-18 fluorodeoxyglucose ((18)F-FDG) PET/CT to identify malignancy...
December 5, 2016: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/27921192/actual-10-year-survivors-after-resection-of-hepatocellular-carcinoma
#6
Jian Zheng, Deborah Kuk, Mithat Gönen, Vinod P Balachandran, T Peter Kingham, Peter J Allen, Michael I D'Angelica, William R Jarnagin, Ronald P DeMatteo
BACKGROUND: Resection of hepatocellular carcinoma (HCC) offers a chance of cure, but recurrence is common and survival is often limited. The clinical and pathological characteristics of long-term survivors have not been well studied. METHODS: We retrospectively reviewed 212 patients who underwent partial hepatectomy for HCC with curative intent from 1992 to 2006. Fifty patients who survived beyond 10 years were compared with 109 patients who died of recurrence within 10 years...
December 5, 2016: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27921025/prostate-specific-antigen-rising-in-iranian-men-in-correlation-with-body-mass-index-fasting-blood-sugar-and-blood-lipid-profile
#7
Davood Arab, Arash Ardestani Zadeh, Majid Mirmohammadkhani, Azadeh Beiglarzadeh
BACKGROUND: Prostate-specific antigen (PSA) is a serine protease that is secreted by prostate cells and it is useful as a tumor marker for prostate cancer. OBJECTIVES: In this study, the relationship between some of metabolic factors and serum PSA level was investigated. MATERIALS AND METHODS: In this cross-sectional study, patients with urinary symptoms or for screening of the prostate cancer (after 50 years of age or 40 years with a family history of prostate cancer), were evaluated...
October 2016: Journal of Nephropathology
https://www.readbyqxmd.com/read/27920523/pegylated-and-nanoparticle-conjugated-sulfonium-salt-photo-triggers-necrotic-cell-death
#8
Alaa A Fadhel, Xiling Yue, Ebrahim H Ghazvini Zadeh, Mykhailo V Bondar, Kevin D Belfield
Photodynamic therapy (PDT) processes involving the production of singlet oxygen face the issue of oxygen concentration dependency. Despite high oxygen delivery, a variety of properties related to metabolism and vascular morphology in cancer cells result in hypoxic environments, resulting in limited effectiveness of such therapies. An alternative oxygen-independent agent whose cell cytotoxicity can be remotely controlled by light may allow access to treatment of hypoxic tumors. Toward that end, we developed and tested both polyethylene glycol (PEG)-functionalized and hydrophilic silica nanoparticle (SiNP)-enriched photoacid generator (PAG) as a nontraditional PDT agent to effectively induce necrotic cell death in HCT-116 cells...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27920142/shedding-light-on-fat-dependence-in-aml
#9
(no author information available yet)
Scientists have begun unraveling the molecular intricacies that drive the appetite of acute myeloid leukemia for fat. They found that these tumor cells have particularly low levels of PHD3, an enzyme that normally activates ACC2 to repress fatty-acid oxidation. This fuels the cells' metabolic reliance on fat-burning, but also renders them highly susceptible to inhibitors of fatty-acid oxidation.
December 2016: Cancer Discovery
https://www.readbyqxmd.com/read/27920093/metformin-reduces-glycometabolism-of-papillary-thyroid-carcinoma-in-vitro-and-in-vivo
#10
Chen-Tian Shen, Wei-Jun Wei, Zhong-Ling Qiu, Hong-Jun Song, Xin-Yun Zhang, Zhen-Kui Sun, Quan-Yong Luo
More aggressive thyroid cancer cells show a higher activity of glycometabolism. Targeting cancer cell metabolism has emerged as a novel approach to prevent or treat malignant tumors. Glucose metabolism regulation effect of metformin in papillary thyroid cancer was investigated in the current study. Human papillary thyroid carcinoma (PTC) cell lines BCPAP and KTC1 were used. Cell viability was detected by CCK8 assay. Glucose uptake and relative gene expression were measured in metformin (0-10 mM for 48 h)-treated cells by (18)F-FDG uptake assay and western blotting analysis, respectively...
January 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/27919971/usefulness-of-18f-%C3%AE-methyltyrosine-pet-for-therapeutic-monitoring-of-patients-with-advanced-lung-cancer
#11
Kyoichi Kaira, Tetsuya Higuchi, Noriaki Sunaga, Yukiko Arisaka, Takeshi Hisada, Hideyuki Tominaga, Noboru Oriuchi, Takayuki Asao, Yoshihito Tsushima, Masanobu Yamada
BACKGROUND/AIM: L-[3-(18)F]-α-methyl tyrosine ((18)F-FAMT) positron emission tomography (PET) has a high specificity for detecting malignant lesions. However, the usefulness of therapeutic monitoring of (18)F-FAMT PET against advanced human neoplasms remains unclear. Here, we evaluated (18)F-FAMT PET clinical significance regarding therapy response and outcome after systemic chemotherapy in patients with advanced lung cancer, compared to (18)F-FDG PET. PATIENTS AND METHODS: All patients with untreated advanced lung cancer received (18)F-FAMT PET and (18)F-FDG PET before and 4 weeks after one cycle of chemotherapy...
December 2016: Anticancer Research
https://www.readbyqxmd.com/read/27919820/tnf-%C3%AE-and-cancer-cachexia-molecular-insights-and-clinical-implications
#12
REVIEW
Hetal J Patel, Bhoomika M Patel
Cancer cachexia characterized by a chronic wasting syndrome, involves skeletal muscle loss and adipose tissue loss and resistance to conventional nutritional support. Cachexia is responsible for the reduction in quality and length of life of cancer patients. It also decreases the muscle strength of the patients. The pro-inflammatory and pro-cachectic factors produced by the tumor cells have important role in genesis of cachexia. A number of pro-inflammatory cytokines, like interleukin-1 (IL-1), IL-6, tumor necrosis factor- alpha (TNF-α) may have important role in the pathological mechanisms of cachexia in cancer...
December 2, 2016: Life Sciences
https://www.readbyqxmd.com/read/27919710/the-transcription-factor-carbohydrate-response-element-binding-protein-chrebp-a-possible-link-between-metabolic-disease-and-cancer
#13
REVIEW
Katsumi Iizuka
Carbohydrate-response element-binding protein (ChREBP) has been identified as a transcription factor that binds to carbohydrate response element in the promoter of pyruvate kinase, liver and red blood cells. ChREBP is activated by metabolites derived from glucose and suppressed by adenosine monophosphate (AMP), ketone bodies and cyclic cAMP. ChREBP regulates gene transcription related to glucose and lipid metabolism. Findings from knockout mice and human subjects suggest that ChREBP helps to induce hepatic steatosis, dyslipidemia, and glucose intolerance...
December 2, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27917951/catalytic-conversion-of-lipophilic-substrates-by-phase-constrained-enzymes-in-the-aqueous-or-in-the-membrane-phase
#14
Marcus Cebula, Ilke Simsek Turan, Birgitta Sjödin, Madhuranayaki Thulasingam, Joseph Brock, Volodymyr Chmyrov, Jerker Widengren, Hiroshi Abe, Bengt Mannervik, Jesper Z Haeggström, Agnes Rinaldo-Matthis, Engin U Akkaya, Ralf Morgenstern
Both soluble and membrane-bound enzymes can catalyze the conversion of lipophilic substrates. The precise substrate access path, with regard to phase, has however, until now relied on conjecture from enzyme structural data only (certainly giving credible and valuable hypotheses). Alternative methods have been missing. To obtain the first experimental evidence directly determining the access paths (of lipophilic substrates) to phase constrained enzymes we here describe the application of a BODIPY-derived substrate (PS1)...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27917942/chemical-imaging-of-platinum-based-drugs-and-their-metabolites
#15
Xin Liu, Amanda B Hummon
Platinum-based drugs (cisplatin, carboplatin, and oxaliplatin) are widely used therapeutic agents for cancer treatment. Even though the platinum (Pt)-drugs are routinely used clinically, a clear picture of their distribution within tumor tissues is lacking. The current methods to image the distribution of Pt drugs are limited and do not enable the discrimination of the drug from its metabolites. In this manuscript, we demonstrate a methodology that enables chemical imaging of a Pt drug and its metabolites simultaneously and specifically...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27917214/treadmill-walking-exercise-modulates-bone-mineral-status-and-inflammatory-cytokines-in-obese-asthmatic-patients-with-long-term-intake-of-corticosteroids
#16
Shehab M Abd El-Kader, Osama H Al-Jiffri, Eman M Ashmawy, Riziq Allah M Gaowgzeh
BACKGROUND: Obesity and asthma are an important public health problem in Saudi Arabia. An increasing body of data supports the hypothesis that obesity is a risk factor for asthma. Asthma appears to be associated with low bone mineral density (BMD) due to long-term use of corticosteroids. Studies recently showed that weight bearing exercise training can increase mineral bone density, reduce weight and improve metabolic control. OBJECTIVE: The present study aimed to measure the effects of treadmill walking exercises on bone mineral status and inflammatory cytokines in obese asthmatic patients treated with long term intake of corticosteroids...
September 2016: African Health Sciences
https://www.readbyqxmd.com/read/27916838/prognostic-relevance-of-methylenetetrahydrofolate-reductase-polymorphisms-for-prostate-cancer
#17
Victor C Lin, Te-Ling Lu, Hsin-Ling Yin, Sheau-Fang Yang, Yung-Chin Lee, Chia-Chu Liu, Chao-Yuan Huang, Chia-Cheng Yu, Ta-Yuan Chang, Shu-Pin Huang, Bo-Ying Bao
Folate metabolism has been associated with cancers via alterations in nucleotide synthesis, DNA methylation, and DNA repair. We hypothesized that genetic variants in methylenetetrahydrofolate reductase (MTHFR), a key enzyme of folate metabolism, would affect the prognosis of prostate cancer. Three haplotype-tagging single-nucleotide polymorphisms (SNPs) across the MTHFR gene region were genotyped in a cohort of 458 patients with clinically localized prostate cancer treated with radical prostatectomy. One SNP, rs9651118, was associated with disease recurrence, and the association persisted after multivariate analyses adjusting for known risk factors...
November 29, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27916296/ampk%C3%AE-is-suppressed-in-bladder-cancer-through-macrophage-mediated-mechanisms
#18
Stavros Kopsiaftis, Poornima Hegde, John A Taylor, Kevin P Claffey
Bladder cancer presents as either low- or high-grade disease, each with distinct mutational profiles; however, both display prominent mTORC1 activation. One major negative regulator of mTORC1 is AMPK, which is a critical metabolic regulator that suppresses cellular growth in response to metabolic stress by negatively regulating mTORC1. Alterations in the activation and protein levels of AMPK have been reported in breast, gastric, and hepatocellular carcinoma. To investigate whether AMPK suppression is responsible for mTOR activation in bladder cancer, the levels of AMPKα were quantified in a cohort of primary human bladder cancers and adjacent nontumor tissues...
December 2016: Translational Oncology
https://www.readbyqxmd.com/read/27916294/high-expression-of-phgdh-predicts-poor-prognosis-in-non-small-cell-lung-cancer
#19
Jinhong Zhu, Jianqun Ma, Xudong Wang, Tianjiao Ma, Shu Zhang, Wei Wang, Xiaoyu Zhou, Jiahai Shi
Tumors have exceptionally high demands for energy and anabolism because of their rapid growth. The de novo serine synthesis pathway initiated by phosphoglycerate dehydrogenase (PHGDH) has been recognized as a hallmark of metabolic adaption in carcinogenesis. The oncogenic role and prognostic value of PHGDH have been investigated in multiple cancer types, including breast cancer, melanoma, cervical cancer, and colon cancer. Due to the importance of PHGDH in cancer, we attempted to determine the clinical significance of PHGDH in 319 patients with non-small cell lung cancer (NSCLC)...
December 2016: Translational Oncology
https://www.readbyqxmd.com/read/27914987/tetrabromobisphenol-a-activates-the-hepatic-interferon-pathway-in-rats
#20
J K Dunnick, D L Morgan, S A Elmore, K Gerrish, A Pandiri, T V Ton, K R Shockley, B A Merrick
Tetrabromobisphenol A (TBBPA) is a widely used flame retardant in printed circuit boards, paper, and textiles. In a two-year study, TBBPA showed evidence of uterine tumors in female Wistar-Han rats and liver and colon tumors in B6C3F1 mice. In order to gain further insight into early gene and pathway changes leading to cancer, we exposed female Wistar Han rats to TBBPA at 0, 25, 250, or 1000mg/kg (oral gavage in corn oil, 5X/week) for 13 weeks. Because at the end of the TBBPA exposure period, there were no treatment-related effects on body weights, liver or uterus lesions, and liver and uterine organ weights were within 10% of controls, only the high dose animals were analyzed...
November 30, 2016: Toxicology Letters
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