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Brain tumor chemotherapy

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https://www.readbyqxmd.com/read/28214639/congenital-glioblastoma-with-distinct-clinical-and-molecular-characteristics-case-reports-and-a-literature-review
#1
Masahiro Kameda, Yoshihiro Otani, Tomotsugu Ichikawa, Akira Shimada, Koichi Ichimura, Isao Date
BACKGROUND: The molecular diagnosis of brain tumors is important in classifying tumors and determining appropriate treatment. Congenital glioblastoma multiforme (GBM) is a rare tumor that occurs in infants, and the prognosis is poor. Approximately 60 patients diagnosed as congenital GBM have been reported. However, few reports have conducted molecular analyses of congenital GBM. CASE DESCRIPTION: We describe two congenital GBM patients treated in our hospital, and report results of immunohistochemistry, fluorescent in situ hybridization (FISH), direct sequencing, and methylation analyses...
February 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28205096/pharmacological-effects-of-asiatic-acid-in-glioblastoma-cells-under-hypoxia
#2
Flourina Kumar Thakor, Ka-Wai Wan, Philip John Welsby, Gail Welsby
Glioblastoma multiforme is the most common and malignant primary brain tumor in adults. Despite current treatment options including surgery followed by radiation and chemotherapy with temozolomide and cisplatin, the median survival rate remains low (<16 months). Combined with increasing drug resistance and the inability of some compounds to cross the blood-brain barrier, novel compounds are being sought for the treatment of this disease. Here, we aimed to examine the pharmacological effect of Asiatic acid (AA) in glioblastoma under hypoxia...
February 15, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28203179/malignant-phyllodes-tumor-presenting-in-bone-brain-lungs-and-lymph-nodes
#3
Eric D Johnson, Evin Gulbahce, Joseph McNally, Saundra S Buys
INTRODUCTION: Phyllodes tumors (PTs) are rare fibroepithelial tumors of the breast which are classified as benign, borderline, or malignant. Malignant PTs account for <1% of malignant breast tumors, and borderline tumors have potential to progress to malignant tumors. Metastatic recurrences are most commonly documented in bone and lungs. We report an extremely rare presentation of recurrent malignant PTs involving the brain, lung, lymph nodes, and bone. CASE: A 66-year-old female presented with a large breast mass...
September 2016: Case Reports in Oncology
https://www.readbyqxmd.com/read/28191774/novel-peripherally-derived-neural-like-stem-cells-as-therapeutic-carriers-for-treating-glioblastomas
#4
Alexander Birbrair, Anirudh Sattiraju, Dongqin Zhu, Gilberto Zulato, Izadora Batista, Van T Nguyen, Maria Laura Messi, Kiran Kumar Solingapuram Sai, Frank C Marini, Osvaldo Delbono, Akiva Mintz
Glioblastoma (GBM), an aggressive grade IV astrocytoma, is the most common primary malignant adult brain tumor characterized by extensive invasiveness, heterogeneity, and angiogenesis. Standard treatment options such as radiation and chemotherapy have proven to be only marginally effective in treating GBM because of its invasive nature. Therefore, extensive efforts have been put forth to develop tumor-tropic stem cells as viable therapeutic vehicles with potential to treat even the most invasive tumor cells that are harbored within areas of normal brain...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28187964/brain-perfusion-and-diffusion-abnormalities-in-children-treated-for-posterior-fossa-brain-tumors
#5
Matthew D Li, Nils D Forkert, Palak Kundu, Cheryl Ambler, Robert M Lober, Terry C Burns, Patrick D Barnes, Iris C Gibbs, Gerald A Grant, Paul G Fisher, Samuel H Cheshier, Cynthia J Campen, Michelle Monje, Kristen W Yeom
OBJECTIVE: To compare cerebral perfusion and diffusion in survivors of childhood posterior fossa brain tumor with neurologically normal controls and correlate differences with cognitive dysfunction. STUDY DESIGN: We analyzed retrospectively arterial spin-labeled cerebral blood flow (CBF) and apparent diffusion coefficient (ADC) in 21 patients with medulloblastoma (MB), 18 patients with pilocytic astrocytoma (PA), and 64 neurologically normal children. We generated ANCOVA models to evaluate treatment effects on the cerebral cortex, thalamus, caudate, putamen, globus pallidus, hippocampus, amygdala, nucleus accumbens, and cerebral white matter at time points an average of 5...
February 7, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28187000/malat1-is-a-prognostic-factor-in-glioblastoma-multiforme-and-induces-chemoresistance-to-temozolomide-through-suppressing-mir-203-and-promoting-thymidylate-synthase-expression
#6
Wei Chen, Xin-Ke Xu, Jun-Liang Li, Kuan-Kei Kong, Hui Li, Cheng Chen, Jing He, Fangyu Wang, Ping Li, Xiao-Song Ge, Fang-Cheng Li
Glioblastoma multiforme (GBM) is the most malignant brain tumor with limited therapeutic options. Temozolomide (TMZ) is a novel cytotoxic agent used as first-line chemotherapy for GBM, however, some individual cells can't be isolated for surgical resection and show treatment-resistance, thus inducing poor prognosis. By using the HiSeq sequencing and bioinformatics methods, we identified lncRNAs showing different expression levels in TMZ-resistant and non-resistant patients. RT-qPCR was then performed in tissues and serum samples, and lncRNA MALAT1 was finally identified to show considerable discriminating potential to identify responding patients from non-responding patients...
February 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28174381/-effectiveness-of-nivolumab-in-large-cell-neuroendocrine-carcinoma-of-the-lung-a-report-of-two-cases
#7
Wakako Daido, Masahiro Yamasaki, Naomi Saito, Sayaka Ishiyama, Naoko Deguchi, Masaya Taniwaki, Haruko Daga, Nobuyuki Ohashi
BACKGROUND: The anti-programmed death-1 antibody nivolumab is an important treatment option for non-small-cell lung carcinoma.However, its effectiveness for large-cell neuroendocrine carcinomas(LCNEC)is still controversial.Here, we report 2 cases of LCNECs that responded to nivolumab.Case 1: A 62-year-old man received chemotherapy and radiotherapy for stage III A lung adenocarcinoma.One year later, another lung lesion was observed and diagnosed as LCNEC using surgical lung biopsy.Although he subsequently received some chemotherapy regimens, the patient developed new brain metastasis, expanded mediastinal lesion, and increased levels of the tumor marker pro-gastrin releasing peptide(ProGRP)...
January 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28174097/synthetic-2-aryl-3-piperidin-1-yl-ethyl-thiazolidin-4-ones-exhibit-selective-in%C3%A2-vitro-antitumoral-activity-and-inhibit-cancer-cell-growth-in-a-preclinical-model-of-glioblastoma-multiforme
#8
Elita F da Silveira, Juliana H Azambuja, Taíse Rosa de Carvalho, Alice Kunzler, Daniel S da Silva, Fernanda C Teixeira, Rodrigo Rodrigues, Fátima T Beira, Rita de Cássia Sant Anna Alves, Roselia M Spanevello, Wilson Cunico, Francieli M Stefanello, Ana P Horn, Elizandra Braganhol
Glioblastoma multiforme (GBM) is the worst form of primary brain tumor, which has a high rate of infiltration and resistance to radiation and chemotherapy, resulting in poor prognosis for patients. Recent studies show that thiazolidinones have a wide range of pharmacological properties including antimicrobial, anti-inflammatory, anti-oxidant and anti-tumor. Here, we investigate the effect antiglioma in vitro of a panel of sixteen synthetic 2-aryl-3-((piperidin-1-yl)ethyl)thiazolidin-4-ones where 13 of these decreased the viability of glioma cells 30-65% (100 μM) compared with controls...
February 4, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28167297/loss-of-pin1-suppresses-hedgehog-driven-medulloblastoma-tumorigenesis
#9
Tao Xu, Honglai Zhang, Sung-Soo Park, Sriram Venneti, Rork Kuick, Kimberly Ha, Lowell Evan Michael, Mariarita Santi, Chiyoko Uchida, Takafumi Uchida, Ashok Srinivasan, James M Olson, Andrzej A Dlugosz, Sandra Camelo-Piragua, Jean-François Rual
Medulloblastoma is the most common malignant brain tumor in children. Therapeutic approaches to medulloblastoma (combination of surgery, radiotherapy, and chemotherapy) have led to significant improvements, but these are achieved at a high cost to quality of life. Alternative therapeutic approaches are needed. Genetic mutations leading to the activation of the Hedgehog pathway drive tumorigenesis in ~30% of medulloblastoma. In a yeast two-hybrid proteomic screen, we discovered a novel interaction between GLI1, a key transcription factor for the mediation of Hedgehog signals, and PIN1, a peptidylprolyl cis/trans isomerase that regulates the postphosphorylation fate of its targets...
February 3, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28160777/curcumin-decreases-malignant-characteristics-of-glioblastoma-stem-cells-via-induction-of-reactive-oxygen-species
#10
Zachary C Gersey, Gregor A Rodriguez, Eric Barbarite, Anthony Sanchez, Winston M Walters, Kelechi C Ohaeto, Ricardo J Komotar, Regina M Graham
BACKGROUND: Glioblastoma Multiforme (GBM) is the most common and lethal form of primary brain tumor in adults. Following standard treatment of surgery, radiation and chemotherapy, patients are expected to survive 12-14 months. Theorized cause of disease recurrence in these patients is tumor cell repopulation through the proliferation of treatment-resistant cancer stem cells. Current research has revealed curcumin, the principal ingredient in turmeric, can modulate multiple signaling pathways important for cancer stem cell self-renewal and survival...
February 4, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28157712/the-interference-of-notch1-target-hes1-affects-cell-growth-differentiation-and-invasiveness-of-glioblastoma-stem-cells-through-modulation-of-multiple-oncogenic-targets
#11
Carlo Cenciarelli, Hany E Marei, Manuela Zonfrillo, Patrizia Casalbore, Armando Felsani, Stefano Giannetti, Gianluca Trevisi, Asma Althani, Annunziato Mangiola
The invasive and lethal nature of Glioblastoma multiforme (GBM) necessitates the continuous identification of molecular targets and search of efficacious therapies to inhibit GBM growth. The GBM resistance to chemotherapy and radiation it is attributed to the existence of a rare fraction of cancer stem cells (CSC) that we have identified within the tumor core and in peritumor tissue of GBM. Since Notch1 pathway is a potential therapeutic target in brain cancer, earlier we highlighted that pharmacological inhibition of Notch1 signalling by γ-secretase inhibitor-X (GSI-X), reduced cell growth of some c-CSC than to their respective p-CSC, but produced negligible effects on cell cycle distribution, apoptosis and cell invasion...
February 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28156632/end-of-life-care-for-glioblastoma-multiforme-gbm-patients-at-a-large-academic-center
#12
Xiao Wang, Jiangxia Wang, Anne Evans, W Anthony Riley, Thomas J Smith
: 56 Background: GBM is a uniformly fatal disease with average survival of < 3 years and universal cognitive problems, making advance care planning paramount. End of life (EOL) patterns of GBM care in the US have not been studied. We examined care in a cohort of GBM and brain tumor (BT) patients as part of a program to provide individual provider feedback about EOL care. METHODS: We reviewed the care of all GBM patients over 3 years with a random sample of 100, and a 5-yr subset of 45 who received their care at Gilchrist Hospice (GH), our largest provider...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28153049/longitudinal-analysis-of-treatment-induced-genomic-alterations-in-gliomas
#13
E Zeynep Erson-Omay, Octavian Henegariu, S Bülent Omay, Akdes Serin Harmancı, Mark W Youngblood, Ketu Mishra-Gorur, Jie Li, Koray Özduman, Geneive Carrión-Grant, Victoria E Clark, Caner Çağlar, Mehmet Bakırcıoğlu, M Necmettin Pamir, Viviane Tabar, Alexander O Vortmeyer, Kaya Bilguvar, Katsuhito Yasuno, Lisa M DeAngelis, Joachim M Baehring, Jennifer Moliterno, Murat Günel
BACKGROUND: Glioblastoma multiforme (GBM) constitutes nearly half of all malignant brain tumors and has a median survival of 15 months. The standard treatment for these lesions includes maximal resection, radiotherapy, and chemotherapy; however, individual tumors display immense variability in their response to these approaches. Genomic techniques such as whole-exome sequencing (WES) provide an opportunity to understand the molecular basis of this variability. METHODS: Here, we report WES-guided treatment of a patient with a primary GBM and two subsequent recurrences, demonstrating the dynamic nature of treatment-induced molecular changes and their implications for clinical decision-making...
February 2, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28152475/gold-coated-poly-%C3%AE%C2%B5-caprolactonediol-based-polyurethane-nanofibers-for-controlled-release-of-temozolomide
#14
Mohammad Irani, Gity Mir Mohamad Sadeghi, Ismaeil Haririan
In the present study, the temozolomide (TMZ) loaded poly (ε-caprolactonediol) based polyurethane (PCL-Diol-b-PU) nanofibers were fabricated as local delivery systems against glioblastoma. The structure and morphology of nanofibers were characterized using FTIR and SEM analysis. The gold nanoparticles were coated on the nanofibers surface to enhance the efficacy of nanofibers for local chemotherapy of brain tumors. The effect of various ratios of DMF/THF solvents and solution concentration on the morphology and fiber diameter of PCL-Diol-b-PU nanofibers was investigated...
January 30, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28143714/chloroethylating-nitrosoureas-in-cancer-therapy-dna-damage-repair-and-cell-death-signaling
#15
REVIEW
Teodora Nikolova, Wynand P Roos, Oliver H Krämer, Herwig M Strik, Bernd Kaina
Chloroethylating nitrosoureas (CNU), such as lomustine, nimustine, semustine, carmustine and fotemustine are used for the treatment of malignant gliomas, brain metastases of different origin, melanomas and Hodgkin disease. They alkylate the DNA bases and give rise to the formation of monoadducts and subsequently interstrand crosslinks (ICL). ICL are critical cytotoxic DNA lesions that link the DNA strands covalently and block DNA replication and transcription. As a result, S phase progression is inhibited and cells are triggered to undergo apoptosis and necrosis, which both contribute to the effectiveness of CNU-based cancer therapy...
January 29, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28137267/targeting-cd133-improves-chemotherapeutic-efficacy-of-recurrent-pediatric-pilocytic-astrocytoma-following-prolonged-chemotherapy
#16
Guifa Xi, Yuping Derek Li, Gordan Grahovac, Veena Rajaram, Nitin Wadhwani, Tatiana Pundy, Barbara Mania-Farnell, Charles David James, Tadanori Tomita
BACKGROUND: Pilocytic astrocytomas (PAs) are the most common pediatric central nervous system neoplasms. In the majority of cases these tumors are benign and receive favorable prognosis following gross total surgical resection. In patients with progressive or symptomatic tumors, aggressive surgical resection is generally not feasible, thus radiation or chemotherapy are accepted initial or adjuvant interventions. Due to serious long-lasting side-effects, radiation is limited in young children; therefore, chemotherapy is widely practiced as an adjuvant treatment for these patients...
January 31, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28133349/-long-term-survival-of-a-patient-with-sigmoid-colon-cancer-with-multiple-visceral-metastases
#17
Yoshiyuki Sasaki, Naoto Nishigori, Fumikazu Koyama, Takeshi Ueda, Takashi Inoue, Keijirou Kawasaki, Shinsaku Obara, Takayuki Nakamoto, Yasuyuki Nakamura, Hisao Fujii, Yoshiyuki Nakajima
A 66-year-old woman underwent total pelvic exenteration for a pelvic tumor. The pathological diagnosis was sigmoid colon cancer T4b(in the small intestine, uterus, and vagina), N0, M0, Stage II . The patient was treated with XELOX for 6 months as adjuvant chemotherapy and was then treated with IRIS for another 6 months. Brain metastasis developed in the left occipital lobe after 12 months, and she underwent craniotomy and enucleation of the tumor. Liver metastasis and peritoneal dissemination metastasis developed 16 months after her initial diagnosis...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28133295/-a-systematic-analysis-of-oncogene-and-tumor-suppressor-genes-for-panitumumab-resistant-rectal-cancer-with-wild-ras-gene-a-case-report
#18
Yosuke Tajima, Yoshifumi Shimada, Ryoma Yagi, Takuma Okamura, Masato Nakano, Hitoshi Kameyama, Hitoshi Nogami, Satoshi Maruyama, Yasumasa Takii, Kohei Miura, Hiroshi Ichikawa, Masayuki Nagahashi, Jun Sakata, Takashi Kobayashi, Toshifumi Wakai
A 58-year-old man was admitted with the complaint of bloody stools. Colonoscopy and computed tomography revealed a rectal cancer with a liver metastasis and multiple lung metastases. After administering a regimen comprising 3 courses of XELOX plus bevacizumab chemotherapy, the sizes of the primary and metastatic lesions decreased remarkably. Abdominoperineal resection was performed for local control of the cancer; the specimen from the initial tumor was found to be KRAS wild type. After 14 courses of XELOX chemotherapy, brain metastases were detected...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28132960/selective-targeting-of-cancer-stem-cells-by-2-aminodihydroquinoline-analogs
#19
Heejoo Park, Yeongji Yu, Hyejin Kim, Eun Lee, Hani Lee, Raok Jeon, Woo-Young Kim
Many aminodihydroquinoline compounds have been studied to determine their cytotoxicity to cancer cells. However, anti- cancer stem cells (CSCs) activity of aminodihydroquinoline has not been tested in spite that CSC is believed to do an important roles in chemotherapy resistance and recurrence. The CSC selective targeting activities of 10 recently synthesized 2-aminodihydroquinoline analogs were examined on CSCs and bulk culture of a glioblastoma cell line. A diethylaminopropyl substituted aminodihydroquinoline, 5h, showed a strong anti-CSC effect and general cytotoxicity...
January 27, 2017: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28130039/polymer-conjugate-of-a-microtubule-destabilizer-inhibits-lung-metastatic-melanoma
#20
Ruinan Yang, Goutam Mondal, Rachel A Ness, Kinsie Arnst, Vaibhav Mundra, Duane D Miller, Wei Li, Ram I Mahato
Melanoma is the most aggressive type of skin cancer. It is highly metastatic, migrating through lymph nodes to distant sites of the body, especially to lungs, liver and brain. Systemic chemotherapy remains the mainstay of treatment; however, the development of multidrug resistance (MDR) restricts the efficacy of current chemotherapeutic drugs. We synthesized a series of microtubule destabilizers, substituted methoxybenzoyl-ary-thiazole (SMART) compounds, which inhibited tubulin polymerization and effectively circumvented MDR...
January 24, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
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