keyword
MENU ▼
Read by QxMD icon Read
search

Medulloblastoma

keyword
https://www.readbyqxmd.com/read/29156720/novel-strategies-of-raman-imaging-for-brain-tumor-research
#1
Imiela Anna, Polis Bartosz, Polis Lech, Abramczyk Halina
Raman diagnostics and imaging have been shown to be an effective tool for the analysis and discrimination of human brain tumors from normal structures. Raman spectroscopic methods have potential to be applied in clinical practice as they allow for identification of tumor margins during surgery. In this study, we investigate medulloblastoma (grade IV WHO) (n= 5), low-grade astrocytoma (grades I-II WHO) (n =4), ependymoma (n=3) and metastatic brain tumors (n= 1) and the tissue from the negative margins used as normal controls...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156007/desmoplastic-nodular-medulloblastoma-in-young-children-a-management-dilemma
#2
Mohamed S AbdelBaki, Daniel R Boué, Jonathan L Finlay, Mark W Kieran
Background: Children with desmoplastic nodular medulloblastoma (DNMB) have excellent survival, leading multiple groups globally to attempt reduction of treatment-related morbidity. In 2013, the Children's Oncology Group began a clinical trial (ACNS1221) eliminating both radiation therapy (RT) and intraventricular methotrexate for children under 3 years of age with localized DNMB, aiming to build upon the excellent outcomes of the German (HIT) trials. ACNS1221 has recently closed due to increased incidence of recurrences noted at the 2-year interim analysis, raising important questions regarding optimal therapy for DNMB...
November 15, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/29147840/medulloblastoma-in-adults-a%C3%A2-retrospective-single-institution-analysis
#3
Indrawati Hadi, Olarn Roengvoraphoj, Maximilian Niyazi, Falk Roeder, Ulrich Schüller, Claus Belka, Silke Birgit Nachbichler
PURPOSE: Adult medulloblastoma is a rare disease treated according to the current pediatric treatment guidelines. This retrospective analysis investigated the clinical outcomes and prognostic factors of adult medulloblastoma patients, who received multimodal therapy at our institution. METHODS: Treatment charts of all patients over the age of 15 years of age with de novo medulloblastoma, who had been treated at our institution between 2001 and 2014, were retrospectively analyzed...
November 16, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/29143922/pre-treatment-lymphopenia-and-indication-of-tumor-induced-systemic-immunosuppression-in-medulloblastoma
#4
Seema Patel, Shiyang Wang, Matija Snuderl, Matthias A Karajannis
The presence of tumor-induced systemic immune suppression, including lymphopenia, has been recognized in adult patients with glioblastoma for several decades, and pre-treatment neutrophil-to-lymphocyte count ratio (NLCR) is associated with inferior clinical outcome in patients with glioblastoma. Whether tumor-induced systemic immune suppression is also present in children with malignant brain tumors is not known. We performed a retrospective analysis of pretreatment neutrophil and lymphocyte counts in pediatric patients with medulloblastoma (MB) compared to a control group of children with posterior fossa pilocytic astrocytoma (PA)...
November 16, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29141555/antineoplastic-effects-of-nf-%C3%AE%C2%BAb-inhibition-by-dhmeq-dehydroxymethylepoxyquinomicin-alone-and-in-co-treatment-with-radio-and-chemotherapy-in-medulloblastoma-cell-lines
#5
Priscila Maria Manzini Ramos, Julia Alejandra Pezuk, Angel Mauricio Castro-Gamero, Harley Francisco de Oliveira, Carlos Alberto Scrideli, Kazuo Umezawa, Luiz Gonzaga Tone
PURPOSE: NF-κB is a transcription factor involved in the transcriptional regulation of a large number of genes related to tumorigenesis in several cancer cell types, and it's inhibition have been related to anticancer effect. DHMEQ (Dehydroxymethylepoxyquinomicin) is a compound that blocks the translocation of NF-κB from the cytoplasm to the nucleus, thus inhibiting its activity as a transcriptional activator. Several studies have shown the antineoplastic effects of DHMEQ in numerous tumor types, however, there are no surveys that tested their effects in MB...
November 13, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/29141249/%C3%AE-catenin-cooperates-with-creb-binding-protein-to-promote-the-growth-of-tumor-cells
#6
Wendan Yu, Liren Li, Fufu Zheng, Wenjing Yang, Shilei Zhao, Chunfang Tian, Wenwen Yin, Yiming Chen, Wei Guo, Lijuan Zou, Wuguo Deng
BACKGROUND/AIMS: β-catenin is an integral component of the canonical Wnt signaling pathway, and its mutations are an autosomal recessive cause of colorectal cancer (CRC), medulloblastoma (MDB), and ovarian cancer. Nevertheless, little is known about its function in lung cancers. METHODS: We first knocked down β-catenin by siRNA to investigate its effects on lung cancer cell proliferation, migration and apoptosis. Then we verified the interaction between β-catenin and CREB binding protein (CBP) by immunofluoresence and co-immunoprecipition assays...
November 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29136303/chromosome-9-mutations-reported-absent-in-some-patients-with-basal-cell-carcinoma-nevus-syndrome
#7
S Shih, B A Urso, R Domozych, K M Updyke, A I Laughlin, J A Solomon
Basal Cell Carcinoma Nevus Syndrome (BCCNS), also known as Gorlin syndrome, is a rare autosomal dominant condition with a substantial disease burden, thought to occur secondary to chromosome 9 mutation evoking a Hedgehog (Hh) signaling aberration that leads to early development of numerous basal cell carcinomas (BCCs). Individuals with BCCNS also present with keratocystic odontogenic tumors, medulloblastomas, and palmar or plantar pits1. This condition demonstrates variable expressivity, leading to differing phenotypes, even within the same family2...
November 14, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29125063/implantable-systems-for-drug-delivery-to-the-brain
#8
Hemlata Kaurav, Deepak N Kapoor
Most diseases and disorders of the brain require long-term therapy and a constant supply of drugs. Implantable drug-delivery systems provide long-term, sustained drug delivery in the brain. The present review discusses different type of implantable systems such as solid implants, in situ forming implants, in situ forming microparticles, depot formulations, polymeric-lipid implants, sucrose acetate isobutyrate and N-stearoyl L-alanine methyl ester systems for continuous drug delivery into brain for various brain diseases including glioblastomas, medulloblastoma, epilepsy, stroke, schizophrenia and Alzheimer's diseases...
December 2017: Therapeutic Delivery
https://www.readbyqxmd.com/read/29118478/intraoperative-squash-smear-cytology-in-cns-lesions-a-study-of-150-pediatric-cases
#9
Arpita Jindal, Kanwalpreet Kaur, Kusum Mathur, Vinod Kumari, Himanshi Diwan
Background: Tumors of the central nervous system in the pediatric age group occur relatively frequently during the early years of life. Brain tumors are the most common solid malignancies of childhood and only second to acute childhood leukemia. Squash cytology is an indispensable diagnostic aid to central nervous system (CNS) lesions. The definitive diagnosis of brain lesions is confirmed by histological examination. Aim: To study the cytology of CNS lesions in pediatric population and correlate it with histopathology...
October 2017: Journal of Cytology
https://www.readbyqxmd.com/read/29108280/trimethylation-of-h3k27-during-human-cerebellar-development-in-relation-to-medulloblastoma
#10
Shahryar E Mir, Michiel Smits, Dennis Biesmans, Machteld Julsing, Marianna Bugiani, Eleonora Aronica, Gertjan J L Kaspers, Jacqueline Cloos, Thomas Würdinger, Esther Hulleman
Medulloblastoma (MB), the most common malignant childhood brain tumor, encompasses a collection of four clinically and molecularly distinct tumor subgroups, i.e. WNT, SHH, Group 3 and Group 4. These tumors are believed to originate from precursor cells during cerebellar development. Although the exact etiology of these brain tumors is not yet known, histone modifications are increasingly recognized as key events during cerebellum development and MB tumorigenesis. Recent studies show that key components involved in post-translational modifications of histone H3 lysine 27 (H3K27) are commonly deregulated in MB...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29103956/mtorc1-mediated-inhibition-of-4ebp1-is-essential-for-hedgehog-signaling-driven-translation-and-medulloblastoma
#11
Chang-Chih Wu, Shirui Hou, Brent A Orr, Bryan R Kuo, Yong Ha Youn, Taren Ong, Fanny Roth, Charles G Eberhart, Giles W Robinson, David J Solecki, Makoto M Taketo, Richard J Gilbertson, Martine F Roussel, Young-Goo Han
Mechanistic target of rapamycin (MTOR) cooperates with Hedgehog (HH) signaling, but the underlying mechanisms are incompletely understood. Here we provide genetic, biochemical, and pharmacologic evidence that MTOR complex 1 (mTORC1)-dependent translation is a prerequisite for HH signaling. The genetic loss of mTORC1 function inhibited HH signaling-driven growth of the cerebellum and medulloblastoma. Inhibiting translation or mTORC1 blocked HH signaling. Depleting 4EBP1, an mTORC1 target that inhibits translation, alleviated the dependence of HH signaling on mTORC1...
October 31, 2017: Developmental Cell
https://www.readbyqxmd.com/read/29099739/4sc-202-as-a-potential-treatment-for-the-pediatric-brain-tumor-medulloblastoma
#12
Shanta M Messerli, Mariah M Hoffman, Etienne Z Gnimpieba, Hella Kohlhof, Ratan D Bhardwaj
This project involves an examination of the effect of the small molecule inhibitor 4SC-202 on the growth of the pediatric brain cancer medulloblastoma. The small molecule inhibitor 4SC-202 significantly inhibits the viability of the pediatric desmoplastic cerebellar human medulloblastoma cell line DAOY, with an IC50 = 58.1 nM, but does not affect the viability of noncancerous neural stem cells (NSC). 4SC-202 exposure inhibits hedgehog expression in the DAOY cell line. Furthermore, microarray analysis of human medulloblastoma patient tumors indicate significant upregulation of key targets in the Hedgehog signaling pathway and Protein Tyrosine Kinase (PTK7)...
November 3, 2017: Brain Sciences
https://www.readbyqxmd.com/read/29093183/therapeutic-targeting-of-pgbd5-induced-dna-repair-dependency-in-pediatric-solid-tumors
#13
Anton G Henssen, Casie Reed, Eileen Jiang, Heathcliff Dorado Garcia, Jennifer von Stebut, Ian C MacArthur, Patrick Hundsdoerfer, Jun Hyun Kim, Elisa de Stanchina, Yasumichi Kuwahara, Hajime Hosoi, Neil J Ganem, Filemon Dela Cruz, Andrew L Kung, Johannes H Schulte, John H Petrini, Alex Kentsis
Despite intense efforts, the cure rates of childhood and adult solid tumors are not satisfactory. Resistance to intensive chemotherapy is common, and targets for molecular therapies are largely undefined. We have found that the majority of childhood solid tumors, including rhabdoid tumors, neuroblastoma, medulloblastoma, and Ewing sarcoma, express an active DNA transposase, PGBD5, that can promote site-specific genomic rearrangements in human cells. Using functional genetic approaches, we discovered that mouse and human cells deficient in nonhomologous end joining (NHEJ) DNA repair cannot tolerate the expression of PGBD5...
November 1, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/29079783/nanog-driven-cell-reprogramming-and-self-renewal-maintenance-in-ptch1-granule-cell-precursors-after-radiation-injury
#14
Barbara Tanno, Simona Leonardi, Gabriele Babini, Paola Giardullo, Ilaria De Stefano, Emanuela Pasquali, Anna Saran, Mariateresa Mancuso
Medulloblastoma (MB) is the most common pediatric brain tumor, comprising four distinct molecular variants, one of which characterized by activation of the Sonic Hedgehog (SHH) pathway, driving 25-30% of sporadic MB. SHH-dependent MBs arise from granule cell precursors (GCPs), are fatal in 40-70% of cases and radioresistance strongly contributes to poor prognosis and tumor recurrence. Patched1 heterozygous (Ptch1 (+/-)) mice, carrying a germ-line heterozygous inactivating mutation in the Ptch1 gene, the Shh receptor and negative regulator of the pathway, are uniquely susceptible to MB development after radiation damage in neonatal cerebellum...
October 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29076966/revisiting-tumor-patterns-and-penetrance-in-germline-tp53-mutation-carriers-temporal-phases-of-li-fraumeni-syndrome
#15
Amina Amadou, Maria I Waddington Achatz, Pierre Hainaut
PURPOSE OF REVIEW: Germline pathogenic TP53 mutation may predispose to multiple cancers but penetrance and cancer patterns remain incompletely documented. We have analyzed international agency for research on cancer TP53 database to reevaluate age and variant-dependent tumor patterns. RECENT FINDINGS: Genome-wide studies suggest that germline variants are more frequent than estimated prevalence of Li-Fraumeni syndrome (LFS), suggesting that many carriers of potentially pathogenic mutations may not develop the syndrome...
October 25, 2017: Current Opinion in Oncology
https://www.readbyqxmd.com/read/29070607/contribution-of-de-novo-and-mosaic-tp53-mutations-to-li-fraumeni-syndrome
#16
Mariette Renaux-Petel, Françoise Charbonnier, Jean-Christophe Théry, Pierre Fermey, Gwendoline Lienard, Jacqueline Bou, Sophie Coutant, Myriam Vezain, Edwige Kasper, Steeve Fourneaux, Sandrine Manase, Maud Blanluet, Bruno Leheup, Ludovic Mansuy, Jacqueline Champigneulle, Céline Chappé, Michel Longy, Nicolas Sévenet, Brigitte Bressac-de Paillerets, Léa Guerrini-Rousseau, Laurence Brugières, Olivier Caron, Jean-Christophe Sabourin, Isabelle Tournier, Stéphanie Baert-Desurmont, Thierry Frébourg, Gaëlle Bougeard
BACKGROUND: Development of tumours such as adrenocortical carcinomas (ACC), choroid plexus tumours (CPT) or female breast cancers before age 31 or multiple primary cancers belonging to the Li-Fraumeni (LFS) spectrum is, independently of the familial history, highly suggestive of a germline TP53 mutation. The aim of this study was to determine the contribution of de novo and mosaic mutations to LFS. METHODS AND RESULTS: Among 328 unrelated patients harbouring a germline TP53 mutation identified by Sanger sequencing and/or QMPSF, we could show that the mutations had occurred de novo in 40 cases, without detectable parental age effect...
October 25, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29062253/gorlin-goltz-syndrome
#17
Betül Şereflican, Bengü Tuman, Murat Şereflican, Sıddıka Halıcıoğlu, Gülzade Özyalvaçlı, Seval Bayrak
Gorlin-Goltz syndrome is a rare multisystemic disease inherited in an autosomal dominant pattern. It is characterized by numerous basal cell carcinoma of the skin, jaw cysts, and skeletal anomalies such as frontal bossing, vertebral anomalies, palmoplantar pits, and falx cerebri calcification. There is a tendency to tumors including medullablastoma, fibroma, rabdomyoma, leiomyosarcoma etc.. The diagnosis is based on major and minor clinical and radiologic criteria. Early diagnosis and treatment are of utmost importance in reducing the severity of long-term sequelae of this syndrome...
September 2017: Türk Pediatri Arşivi
https://www.readbyqxmd.com/read/29061299/challenges-and-recent-advances-in-medulloblastoma-therapy
#18
REVIEW
Vinod Kumar, Virender Kumar, Timothy McGuire, Donald W Coulter, John G Sharp, Ram I Mahato
Medulloblastoma (MB) is the most common childhood brain tumor, which occurs in the posterior fossa. MB tumors are highly heterogeneous and have diverse genetic make-ups, with differential microRNA (miRNA) expression profiles and variable prognoses. MB can be classified into four subgroups, each with different origins, pathogenesis, and potential therapeutic targets. miRNA and small-molecule targeted therapies have emerged as a potential new therapeutic paradigm in MB treatment. However, the development of chemoresistance due to surviving cancer stem cells and dysregulation of miRNAs remains a challenge...
October 20, 2017: Trends in Pharmacological Sciences
https://www.readbyqxmd.com/read/29055107/targeting-class-i-histone-deacetylases-by-the-novel-small-molecule-inhibitor-4sc-202-blocks-oncogenic-hedgehog-gli-signaling-and-overcomes-smoothened-inhibitor-resistance
#19
Wolfgang Gruber, Elisabeth Peer, Dominik P Elmer, Christina Sternberg, Suzana Tesanovic, Pedro Del Burgo, Sonia Coni, Gianluca Canettieri, Daniel Neureiter, René Bartz, Hella Kohlhof, Daniel Vitt, Fritz Aberger
Aberrant activation of Hedgehog (HH)/GLI signaling is causally involved in numerous human malignancies, including basal cell carcinoma (BCC) and medulloblastoma. HH pathway antagonists targeting Smoothened (SMO), an essential effector of canonical HH/GLI signaling, show significant clinical success in BCC patients and have recently been approved for the treatment of advanced and metastatic BCC. However, rapid and frequent development of drug resistance to SMO inhibitors (SMOi) together with severe side effects caused by prolonged SMOi treatment call for alternative treatment strategies targeting HH/GLI signaling downstream of SMO...
October 21, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29050204/irreversible-growth-plate-fusions-in-children-with-medulloblastoma-treated-with-a-targeted-hedgehog-pathway-inhibitor
#20
Giles W Robinson, Sue C Kaste, Wassim Chemaitilly, Daniel C Bowers, Stephen Laughton, Amy Smith, Nicholas G Gottardo, Sonia Partap, Anne Bendel, Karen D Wright, Brent A Orr, William C Warner, Arzu Onar-Thomas, Amar Gajjar
The permanent defects in bone growth observed in preclinical studies of hedgehog (Hh) pathway inhibitors were not substantiated in early phase clinical studies of vismodegib in children. Consequently, vismodegib advanced into pediatric trials for malignancies suspected of being driven by aberrant activation of the Hh pathway. In one multicenter phase II trial, vismodegib was added to the therapy regimen for newly diagnosed Hh pathway activated medulloblastoma. Herein, we report on 3 children (2 on trial and one off trial) treated with vismodegib who developed widespread growth plate fusions that persist long after cessation of therapy...
September 19, 2017: Oncotarget
keyword
keyword
15141
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"