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https://www.readbyqxmd.com/read/29351706/micrornas-and-target-genes-in-pituitary-adenomas
#1
Yajuan Feng, Zhi-Gang Mao, Xin Wang, Qiu Du, Mengyao Jian, Dimin Zhu, Zheng Xiao, Hai-Jun Wang, Yong-Hong Zhu
Pituitary adenomas account for the top three primary intracranial tumors in terms of total incidence rates. The clinical symptoms presented by the disease are often characterized by a series of systemic endocrine disorders, severe occupational lesions, and even some malignant features, and therefore early diagnosis and predicting recurrence would be instructive for clinical treatment of pituitary adenomas. An increasing number of specific microRNA (miRNA) expression signatures have been identified in pituitary, and miRNAs are related with the pituitary tumorigenesis, dysfunction, neurodegeneration, and metastatic non-functioning pituitary carcinoma...
January 19, 2018: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/29350470/specific-expression-of-pd-l1-in-rela-fusion-supratentorial-ependymoma-implications-for-pd-1-targeted-therapy
#2
Davis A Witt, Andrew M Donson, Vladimir Amani, Daniel C Moreira, Bridget Sanford, Lindsey M Hoffman, Michael H Handler, Jean M Mulcahy Levy, Kenneth L Jones, Anandani Nellan, Nicholas K Foreman, Andrea M Griesinger
BACKGROUND: A desperate need for novel therapies in pediatric ependymoma (EPN) exists, as chemotherapy remains ineffective and radiotherapy often fails. EPN have significant infiltration of immune cells, which correlates with outcome. Immune checkpoint inhibitors provide an avenue for new treatments. This study characterizes tumor-infiltrating immune cells in EPN and aims at predicting candidates for clinical trials using checkpoint inhibitors targeting PD-L1/PD-1 (programmed death ligand 1/programmed death 1)...
January 19, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29350351/convection-enhanced-delivery-of-cetuximab-conjugated-iron-oxide-nanoparticles-for-treatment-of-spontaneous-canine-intracranial-gliomas
#3
A Courtenay Freeman, Simon R Platt, Shannon Holmes, M Kent, Kelsey Robinson, Elizabeth Howerth, Joe Eagleson, Alexandros Bouras, Milota Kaluzova, Constantinos G Hadjipanayis
Cetuximab conjugated iron-oxide nanoparticles (cetuximab-IONPs) have shown both in-vitro and in-vivo anti-tumor efficacy against gliomas. The purpose of this pilot study was to evaluate the safety and potential efficacy of cetuximab-IONPs for treatment of spontaneously occurring intracranial gliomas in canines after convection-enhanced delivery (CED). The use of CED allowed for direct infusion of the cetuximab-IONPs both intratumorally and peritumorally avoiding the blood brain barrier (BBB) and limiting systemic effects...
January 19, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29350171/the-dna-copy-number-landscape-of-a-collision-tumor
#4
Hugh Kearney, Jane B Cryan, Seamus Looby, Francesca M Brett, Michael A Farrell, Patrick G Buckley
Intracranial collision tumors are composed of two histologically distinct but merging components, and are rare. Their genetic profile has rarely been described. Comparative genome hybridization of a combined meningioma and oligodendroglioma demonstrated deletion of chromosome 22q and of 19q in both tumors. Somatic deletion of chromosome 22q and 19q is associated with development of an intracranial collision tumor.
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January 19, 2018: Clinical Neuropathology
https://www.readbyqxmd.com/read/29345507/ovarian-tissue-cryopreservation-in-young-females-through-the-oncofertility-consortium-s-national-physicians-cooperative
#5
Austin G Armstrong, Bruce F Kimler, Brigid M Smith, Teresa K Woodruff, Mary Ellen Pavone, Francesca E Duncan
AIM: To characterize the clinical indications of females (<15 years old) undergoing ovarian tissue cryopreservation (OTC) through the Oncofertility Consortium's National Physicians Cooperative (OC-NPC). PATIENTS & METHODS: The clinical indications of 114 females who underwent OTC were classified, and their incidence was compared with childhood cancer databases. RESULTS: Leukemias/myeloproliferative diseases/myelodysplastic diseases and hemoglobinopathies were the most prevalent oncologic and nononcologic indications for OTC, respectively...
January 18, 2018: Future Oncology
https://www.readbyqxmd.com/read/29344501/pigmented-epithelioid-melanocytoma-of-the-cheek-orbit-and-intracranial-cavity-a-case-report
#6
Erik R Johnson, Michael E Korchak, Todd A Goodglick, Jasbir S Johal, Craig R Dufresne, Sina J Sabet
Pigmented epithelioid melanocytoma (PEM) of the skin has been rarely reported in ophthalmology. The purpose of this case report is to present a young male born with a progressive, hyperpigmented lesion involving the orbit and intracranial cavity diagnosed as PEM. The case is unique given the young age and the size, multifocality, and growth of this tumor. Identification of this lesion is paramount due to its low-grade malignant potential.
December 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/29341001/dynamic-susceptibility-contrast-mri-in-small-animals
#7
Pilar López-Larrubia
The use of magnetic resonance imaging (MRI) for studying the cerebral perfusion mechanisms is well proved and contrasted in the clinical and research setups. This methodology is a promising tool in assessing numerous brain diseases like intracranial tumors, neurodegeneration processes, mental disorders, injuries and so on. In the preclinical environment, perfusion MRI offers a powerful resource for characterizing pathological models and specially identifying biomarkers to monitor the illness and validate the efficacy of therapeutical approaches...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29340361/a-curcumin-loaded-polymeric-micelle-as-a-carrier-of-a-microrna-21-antisense-oligonucleotide-for-enhanced-anti-tumor-effects-in-a-glioblastoma-animal-model
#8
Xiaonan Tan, Gyeungyun Kim, Dahee Lee, Jungju Oh, Minkyung Kim, Chunxian Piao, Jaewon Lee, Min Sang Lee, Ji Hoon Jeong, Minhyung Lee
A glioblastoma is a common primary brain tumor that expresses microRNA-21 (miR-21), which inhibits the expression of pro-apoptotic genes such as phosphatase and tensin homologue (PTEN) and programmed cell death 4 (PDCD4). Therefore, an antisense-oligonucleotide against miR-21 (miR21ASO) could have therapeutic effects for glioblastomas. In this study, curcumin was loaded into deoxycholic acid-conjugated polyethylenimine (DP) micelles. The curcumin-loaded DP micelle (DP-Cur) was evaluated as a carrier for the combined delivery of curcumin and miR21ASO...
January 17, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29340062/correlation-of-psychooncological-distress-screening-and-quality-of-life-assessment-in-neurosurgical-patients
#9
Kira Hoffmann, Marcel Kamp, Hans-Jakob Steiger, Michael Sabel, Marion Rapp
Background: Cerebral tumors are associated with high rates of anxiety, depression and reduced health related quality of life. But still psychooncological screening instruments are not implemented in the daily routine of neurosurgical departments. In contrast the EORTC QLQ-C30/ EORTC QLQ- BN20 questionnaire is often used to evaluate quality of life in the framework of clinical studies. We were therefore interested, if conspicuous distress screening results are also reflected by HRQOL assessment...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339639/mri-guided-interstitial-laser-ablation-for-intracranial-lesions-a-large-single-institution-experience-of-133-cases
#10
Ashwin A Kamath, Daniel D Friedman, Carl D Hacker, Matthew D Smyth, David D Limbrick, Albert H Kim, Ammar H Hawasli, Eric C Leuthardt
BACKGROUND: Managing difficult-to-access lesions or surgically accessible lesions in fragile patients is a central problem in neurosurgery. MRI-guided interstitial laser ablation (ILA) is a minimally invasive option that may provide a safe means of treating these challenging patients. OBJECTIVE: We aim to (1) evaluate safety, efficacy, and preliminary outcomes within a diverse and large series of ILA treatments; and (2) report technical details and operative trends that proved useful over time in the authors' experience and that may be of use to neurosurgeons who perform ILA...
January 17, 2018: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/29339322/endoscopic-endonasal-craniofacial-surgery-for-recurrent-skull-base-meningiomas-involving-the-pterygopalatine-fossa-the-infratemporal-fossa-the-orbit-and-the-paranasal-sinus
#11
Masahiro Shin, Masaaki Shojima, Kenji Kondo, Hirotaka Hasegawa, Shunya Hanakita, Akihiro Ito, Taichi Kin, Nobuhito Saito
OBJECT: Skull base meningiomas carry a non-negligible risk of recurrence. In particular, those arising from the sphenoid wings or middle cranial fossa penetrate into extracranial regions, uncommonly showing massive expansion into the craniofacial regions on recurrence. The role of endoscopic endonasal surgery for those intractable lesions remains unclear. METHODS: We performed endoscopic endonasal craniofacial surgery for 8 recurrent meningiomas invading into the pterygopalatine fossa, infratemporal fossa, nasopharynx, paranasal sinus, or orbit, comprising 2 meningothelial and 1 fibrous meningiomas (WHO grade I), 3 atypical and 1 clear cell meningiomas (grade II), and 1 anaplastic meningioma (grade III)...
January 12, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29334779/extra-articular-tenosynovial-giant-cell-tumor-of-diffuse-type-in-the-temporal-area-with-brain-parenchymal-invasion-a-case-report
#12
Seung-Myoung Son, Young Seok Park, Chi-Hoon Choi, Ho-Chang Lee, Ok-Jun Lee, Chang Gok Woo
Tenosynovial giant cell tumor of diffuse type is a locally aggressive neoplasm that most commonly arises in the lower extremities. Herein, we report for the first time a case of an extra-articular tenosynovial giant cell tumor of diffuse type in the temporal region with brain parenchymal invasion. Imaging studies revealed an intracranial expansile mass in the temporal bone without involvement of the temporomandibular joint. The unusual location of the tumor without involvement of the joint and the presence of brain parenchymal invasion made this case challenging to diagnose...
January 15, 2018: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29334442/a-rare-initial-presentation-of-primary-diffuse-leptomeningeal-pnet-in-a-10-year-old-male
#13
Peter Paul Lim, Jagadeesh Ramdas, Michal Ann Miller, Conrad Schuerch, George Wu
Primary leptomeningeal primitive neuroectodermal tumors (PNETs) are extremely rare childhood central nervous system malignancies harboring a very poor prognosis. There is no consensus treatment for these tumors to date. We report a case of a 10-year-old male who presented with mental status change, hydrocephalus, intracranial and spinal diffuse leptomeningeal enhancement without a primary mass upon cranial imaging and a negative initial biopsy until five months into his presentation. He responded significantly well to initial chemotherapy and radiotherapy...
December 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/29332078/magnetic-resonance-guided-high-intensity-focused-ultrasound-for-treating-movement-disorders
#14
Young Goo Kim, Eun Jung Kweon, Won Seok Chang, Hyun Ho Jung, Jin Woo Chang
Transcranial magnetic resonance-guided focused ultrasound (MRgFUS) surgery has recently gained favor as a novel, noninvasive alternative to conventional neurosurgery. In contrast to traditional ablative interventions, transcranial MRgFUS surgery is entirely imaging-guided and uses continuous temperature measurements at the target and surrounding tissue taken in real-time. Unlike Gamma Knife radiosurgery, MRgFUS surgery can make a lesion immediately and does not use ionizing radiation. Moreover, since no metallic device is implanted, MR imaging-based diagnosis is not restricted throughout life...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29331746/canadian-neurosurgery-educators-views-on-stereotactic-radiosurgery-in-residency-training
#15
Nardin Samuel, Justine Philteos, Naif M Alotaibi, Christopher Ahuja, Alireza Mansouri, Abhaya V Kulkarni
OBJECTIVE: Despite the increasing prominence of stereotactic radiosurgery (SRS) in treating intracranial and spinal pathologies, there is currently a dearth of exposure to this modality in neurosurgical residency. To address this gap, the aim of this study is to assess neurosurgery educators' views regarding the current state of SRS exposure, and to identify potential approaches to improve residency education in this domain. METHODS: Qualitative thematic analysis and constructivist grounded theory methodology were employed...
January 10, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29330804/in-vivo-manipulation-of-hif-1%C3%AE-expression-during-glioma-genesis
#16
Patricia D B Tiburcio, Séan B Lyne, L Eric Huang
Hypoxia has long been recognized as a driving force of tumor progression and therapeutic resistance, and the transcription factor HIF-1α is believed to play a crucial role in these processes. Here we describe an efficient RCAS/Nes-TVA system that allows for in vivo manipulation of HIF-1α expression in the mouse neural progenitor cells. Simple production of the recombinant avian virus RCAS enables quick delivery of gene of interest through injection into the neural progenitors of transgenic mice expressing the viral cognate receptor TVA under the nestin promoter...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29330748/surgery-in-elderly-patients-with-intracranial-meningioma-neuropsychological-functioning-during-a-long-term-follow-up
#17
Andrea Di Cristofori, Barbara Zarino, Giulio Bertani, Marco Locatelli, Paolo Rampini, Giorgio Carrabba, Manuela Caroli
Surgical treatment of elderly patients with meningioma is has proved to be safe, especially when patients are selected using dedicated surgical scores. These scores take into account tumor size, edema, location and patient's co-morbidities. Neuropsychological functioning (NPF) of this kind of patients has been poorly studied in literature and it is not taken into account by these scores. Aim of our study was to describe the long-term outcome in terms of NPF of elderly patients undergoing surgery. Patients older than 70 years of age affected by intracranial meningioma and selected with the Clinical-Radiological Grading Score were included in our study...
January 12, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29328431/bioinformatic-analysis-of-gene-expression-profiling-of-intracranial-aneurysm
#18
Lijuan Bo, Bo Wei, Zhanfeng Wang, Chaohui Li, Zheng Gao, Zhuang Miao
Intracranial aneurysm (IA) is a severe clinical condition of primary concern and currently, there is no effective therapeutic reagent. The present study aimed to investigate the molecular mechanism of IA via bioinformatic analysis. Various gene expression profiles (GSE26969) were downloaded from the Gene Expression Omnibus database, including 3 IA and 3 normal superficial temporal artery samples. Firstly, the limma package in R language was used to identify differentially expressed genes (DEGs; P‑value <0...
December 29, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29328001/gamma-knife-radiosurgery-of-saccular-aneurysms-in-a-rabbit-model
#19
Mark D Meadowcroft, Timothy K Cooper, Sebastian Rupprecht, Thaddeus C Wright, Elizabeth E Neely, Michele Ferenci, Weimin Kang, Qing X Yang, Robert E Harbaugh, James R Connor, James McInerney
OBJECTIVE Intracranial aneurysms are vascular abnormalities associated with neurological morbidity and mortality due to risk of rupture. In addition, many aneurysm treatments have associated risk profiles that can preclude the prophylactic treatment of asymptomatic lesions. Gamma Knife radiosurgery (GKRS) is a standard treatment for trigeminal neuralgia, tumors, and arteriovenous malformations. Aneurysms associated with arteriovenous malformations have been noted to resolve after treatment of the malformation...
January 12, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29327998/a-novel-scale-for-describing-visual-outcomes-in-patients-following-resection-of-lesions-affecting-the-optic-apparatus-the-unified-visual-function-scale
#20
Serge Makarenko, Vincent Ye, Peter A Gooderham, Ryojo Akagami
OBJECTIVE Historically, descriptions of visual acuity and visual field change following intracranial procedures have been very rudimentary. Clinicians and researchers have often used basic descriptions, such as "improved," "worsened," and "unchanged," to describe outcomes following resections of tumors affecting the optic apparatus. These descriptors are vague, difficult to quantify, and challenging to apply in a clinical perspective. Several groups have attempted to combine visual acuity and visual fields into a single assessment score, but these are not user-friendly...
January 12, 2018: Journal of Neurosurgery
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