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aminolevulinic acid, glioma

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https://www.readbyqxmd.com/read/28169355/enhancement-of-5-aminolevulinic-acid-based-fluorescence-detection-of-side-population-defined-glioma-stem-cells-by-iron-chelation
#1
Wenqian Wang, Kouichi Tabu, Yuichiro Hagiya, Yuta Sugiyama, Yasuhiro Kokubu, Yoshitaka Murota, Shun-Ichiro Ogura, Tetsuya Taga
Cancer stem cells (CSCs) are dominantly responsible for tumor progression and chemo/radio-resistance, resulting in tumor recurrence. 5-aminolevulinic acid (ALA) is metabolized to fluorescent protoporphyrin IX (PpIX) specifically in tumor cells, and therefore clinically used as a reagent for photodynamic diagnosis (PDD) and therapy (PDT) of cancers including gliomas. However, it remains to be clarified whether this method could be effective for CSC detection. Here, using flow cytometry-based analysis, we show that side population (SP)-defined C6 glioma CSCs (GSCs) displayed much less 5-ALA-derived PpIX fluorescence than non-GSCs...
February 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28035368/5-aminolevulinic-acid-enhances-mitochondrial-stress-upon-ionizing-irradiation-exposure-and-increases-delayed-production-of-reactive-oxygen-species-and-cell-death-in-glioma-cells
#2
Kunihiro Ueta, Junkoh Yamamoto, Tohru Tanaka, Yoshiteru Nakano, Takehiro Kitagawa, Shigeru Nishizawa
5-Aminolevulinic acid (5-ALA) can accumulate protoporphyrin IX (PpIX) in tumour cell mitochondria and is well known for its utility in fluorescence-guided resection of malignant gliomas as a live molecular marker. Previously, we and other authors demonstrated that 5-ALA has a radiosensitizing effect for tumours. In the present study, we aimed to investigate the mechanism underlying the radiosensitizing effect of 5-ALA by focusing on glioma cell mitochondria. Using an enhancer (ciprofloxacin) of 5-ALA-induced PpIX accumulation, we evaluated the influence of ionizing irradiation (IR) and delayed reactive oxygen species (ROS) production 12 h after IR by colony-forming assay and flow cytometry (FCM) with different amounts of PpIX accumulation...
February 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27878374/agents-for-fluorescence-guided-glioma-surgery-a-systematic-review-of-preclinical-and-clinical-results
#3
REVIEW
Joeky T Senders, Ivo S Muskens, Rosalie Schnoor, Aditya V Karhade, David J Cote, Timothy R Smith, Marike L D Broekman
BACKGROUND: Fluorescence-guided surgery (FGS) is a technique used to enhance visualization of tumor margins in order to increase the extent of tumor resection in glioma surgery. In this paper, we systematically review all clinically tested fluorescent agents for application in FGS for glioma and all preclinically tested agents with the potential for FGS for glioma. METHODS: We searched the PubMed and Embase databases for all potentially relevant studies through March 2016...
January 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27837434/prediction-of-genetic-subgroups-in-adult-supra-tentorial-gliomas-by-pre-and-intraoperative-parameters
#4
Shunsuke Nakae, Kazuhiro Murayama, Hikaru Sasaki, Masanobu Kumon, Yuya Nishiyama, Shigeo Ohba, Kazuhide Adachi, Shinya Nagahisa, Takuro Hayashi, Joji Inamasu, Masato Abe, Mitsuhiro Hasegawa, Yuichi Hirose
Recent progress in neuro-oncology has validated the significance of genetic diagnosis in gliomas. We previously investigated IDH1/2 and TP53 mutations via Sanger sequencing for adult supratentorial gliomas and reported that PCR-based sequence analysis classified gliomas into three genetic subgroups that have a strong association with patient prognosis: IDH mutant gliomas without TP53 mutations, IDH and TP53 mutant gliomas, and IDH wild-type gliomas. Furthermore, this analysis had a strong association with patient prognosis...
November 11, 2016: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/27832337/evaluation-of-the-risk-of-liver-damage-from-the-use-of-5-aminolevulinic-acid-for-intra-operative-identification-and-resection-in-patients-with-malignant-gliomas
#5
Cecilie Mørck Offersen, Jane Skjoeth-Rasmussen
BACKGROUND: The clinical efficacy of 5-aminolevulinic acid (5-ALA) for fluorescence-guided surgery of malignant gliomas is evident from several studies; however, as post-operative elevations of liver enzymes have been seen, there is a potential risk of liver damage upon administration. The aim of the present study was to assess the potential risk of liver damage and investigate liver enzyme reactions of patients going through 5-ALA-guided operations to improve the monitoring of their operations...
January 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27764515/5-aminolevulinic-acid-mediated-sonosensitization-of-rat-rg2-glioma-cells-in-vitro
#6
K Bilmin, T Kujawska, W Secomski, A Nowicki, P Grieb
Sonodynamic therapy (SDT) is a promising technique based on the ability of certain substances, called sonosensitizers, to sensitize cancer cells to non-thermal effects of low-energy ultrasound waves, allowing their destruction. Sonosensitization is thought to induce cell death by direct physical effects such as cavitation and acoustical streaming as well as by complementary chemical reactions generating oxygen free radicals. One of the promising sonosensitizers is 5-aminolevulinic acid (ALA) which upon selective uptake by cancer cells is metabolized and accumulated as protoporphyrin IX...
2016: Folia Neuropathologica
https://www.readbyqxmd.com/read/27672334/clinical-utility-of-5-aminolevulinic-acid-hcl-to-better-visualize-and-more-completely-remove-gliomas
#7
REVIEW
Sameer H Halani, D Cory Adamson
Surgical resection is typically the first line of treatment for gliomas. However, the neurosurgeon faces a major challenge in achieving maximal resection in high-grade gliomas as these infiltrative tumors make it difficult to discern tumor margins from normal brain with conventional white-light microscopy alone. To aid in resection of these infiltrative tumors, fluorescence-guided surgery has gained much popularity in intraoperative visualization of malignant gliomas, with 5-aminolevulinic acid (5-ALA) leading the way...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27643918/intraoperative-probe-based-confocal-laser-endomicroscopy-in-surgery-and-stereotactic-biopsy-of-low-grade-and-high-grade-gliomas-a-feasibility-study-in-humans
#8
Vladislav Pavlov, David Meyronet, Vincent Meyer-Bisch, Xavier Armoiry, Brian Pikul, Chloé Dumot, Pierre-Aurelien Beuriat, Francesco Signorelli, Jacques Guyotat
BACKGROUND: The management of gliomas is based on precise histologic diagnosis. The tumor tissue can be obtained during open surgery or via stereotactic biopsy. Intraoperative tissue imaging could substantially improve biopsy precision and, ultimately, the extent of resection. OBJECTIVE: To show the feasibility of intraoperative in vivo probe-based confocal laser endomicroscopy (pCLE) in surgery and biopsy of gliomas. METHODS: In our prospective observational study, 9 adult patients were enrolled between September 2014 and January 2015...
October 2016: Neurosurgery
https://www.readbyqxmd.com/read/27608331/antagonistic-effects-of-endogenous-nitric-oxide-in-a-glioblastoma-photodynamic-therapy-model
#9
Jonathan M Fahey, Joseph V Emmer, Witold Korytowski, Neil Hogg, Albert W Girotti
Gliomas are aggressive brain tumors that are resistant to conventional chemotherapy and radiotherapy. Much of this resistance is attributed to endogenous nitric oxide (NO). Recent studies revealed that 5-aminolevulinic acid (ALA)-based photodynamic therapy (PDT) has advantages over conventional treatments for glioblastoma. In this study, we used an in vitro model to assess whether NO from glioblastoma cells can interfere with ALA-PDT. Human U87 and U251 cells expressed significant basal levels of neuronal NO synthase (nNOS) and its inducible counterpart (iNOS)...
November 2016: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/27496021/selective-5-aminolevulinic-acid-induced-protoporphyrin-ix-fluorescence-in-gliomas
#10
Ruichong Ma, Colin Watts
Malignant gliomas are locally invasive tumors that offer a poor prognosis. Evidence shows that complete resection of the tumor at the time of surgery confers a significant improvement in overall survival. In recent years, 5- aminolevulinic acid (ALA)-induced fluorescence has been used by neurosurgeons to good effect in increasing the rate of complete resection. Despite the considerable interest in the use of 5-ALA in fluorescence-guided neurosurgery, the mechanisms behind the accumulation of Protoporphyrin IX (PpIX) in neoplastic tissue are unclear...
October 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27429612/fluorescence-guided-resection-of-malignant-glioma-with-5-ala
#11
Sadahiro Kaneko, Sadao Kaneko
Malignant gliomas are extremely difficult to treat with no specific curative treatment. On the other hand, photodynamic medicine represents a promising technique for neurosurgeons in the treatment of malignant glioma. The resection rate of malignant glioma has increased from 40% to 80% owing to 5-aminolevulinic acid-photodynamic diagnosis (ALA-PDD). Furthermore, ALA is very useful because it has no serious complications. Based on previous research, it is apparent that protoporphyrin IX (PpIX) accumulates abundantly in malignant glioma tissues after ALA administration...
2016: International Journal of Biomedical Imaging
https://www.readbyqxmd.com/read/27428785/evaluation-of-diffusion-tensor-imaging-based-tractography-of-the-corticospinal-tract-a-correlative-study-with-intraoperative-magnetic-resonance-imaging-and-direct-electrical-subcortical-stimulation
#12
Seyed Amirhossein Javadi, Arya Nabavi, Mario Giordano, Elham Faghihzadeh, Amir Samii
BACKGROUND: The accuracy of intraoperative diffusion tensor imaging (DTI)-based tractography of the corticospinal tract (CST) is crucial for its use in neurosurgical planning and its implementation in image-guided surgery. To the best of our knowledge, this is the largest prospective study of the intraoperative direct electrical subcortical stimulation (DESS) of the CST with intraoperative DTI tractography of the CST, with application of intraoperative magnetic resonance imaging (iMRI)...
July 13, 2016: Neurosurgery
https://www.readbyqxmd.com/read/27374931/histopathological-implications-of-ventricle-wall-5-aminolevulinic-acid-induced-fluorescence-in-the-absence-of-tumor-involvement-on-magnetic-resonance-images
#13
Ju Hyung Moon, Se Hoon Kim, Jin-Kyoung Shim, Tae-Hoon Roh, Kyoung Su Sung, Ji-Hyun Lee, Junseong Park, Junjeong Choi, Eui-Hyun Kim, Sun Ho Kim, Seok-Gu Kang, Jong Hee Chang
During 5-aminolevulinic acid (ALA)-guided glioblastoma multiforme (GBM) surgery, we encountered fluorescence in ventricular walls that lacked enhancement on magnetic resonance (MR) images and were free of macroscopic invasion of tumor cells. However, the meaning of ventricular wall fluorescence during 5-ALA-guided surgery is still unknown. The aim of this study was to investigate the relationship between intraoperative 5-ALA fluorescence and histopathological findings of ventricular walls free of enhancement on MR images...
August 2016: Oncology Reports
https://www.readbyqxmd.com/read/27183272/the-role-of-5-aminolevulinic-acid-in-enhancing-surgery-for-high-grade-glioma-its-current-boundaries-and-future-perspectives-a-systematic-review
#14
Alireza Mansouri, Sheila Mansouri, Laureen D Hachem, George Klironomos, Michael A Vogelbaum, Mark Bernstein, Gelareh Zadeh
5-Aminolevulinic acid (5-ALA) has been approved as an intraoperative adjunct in glioma surgery in Europe, but not North America. A systematic review was conducted to assess the evidence regarding 5-ALA as a surgical adjunct. The MEDLINE, EMBASE, and CENTRAL databases were searched, using terms relevant to "5-ALA" and "high-grade gliomas." Included studies were based on adults aged ≥18 years who underwent surgical resection/biopsy. No language or date limitations were used. Forty-three studies (1830 patients) were identified...
August 15, 2016: Cancer
https://www.readbyqxmd.com/read/27178236/5-aminolevulinic-acid-accumulation-in-a-cerebral-infarction-mimicking-high-grade-glioma
#15
Felix Behling, Florian Hennersdorf, Antje Bornemann, Marcos Tatagiba, Marco Skardelly
BACKGROUND: 5-Aminolevulinic acid (5-ALA) has become an integral part in the neurosurgical treatment of malignant glioma. Over time, several other tumor entities have been identified to metabolize 5-ALA and show a similar fluorescence pattern during surgical resection. This case report is the first description of 5-ALA accumulation in postischemic cerebral tissue. This evidence questions the assumption that 5-ALA accumulation in glioma is exclusively attributed to tumor infiltration. Instead, 5-ALA accumulation can also occur beyond the tumor borders and may be partially ascribed to inflammatory changes in the surrounding brain tissue...
August 2016: World Neurosurgery
https://www.readbyqxmd.com/read/26906188/efficacy-of-5-aminolevulinic-acid-based-photodynamic-therapy-in-pituitary-adenomas-experimental-study-on-rat-and-human-cell-cultures
#16
Lisa Margarete Neumann, Kerim Beseoglu, Philipp Joerg Slotty, Brigitte Senger, Marcel Alexander Kamp, Daniel Hänggi, Hans Jakob Steiger, Jan Frederick Cornelius
BACKGROUND: Incomplete resection of pituitary adenomas may result in recurrence. As adjuvant irradiation is not riskless, alternative treatment options should be investigated. 5-aminolevulinic acid based photodynamic therapy (5-ALA based PDT) showed promising results for malignant gliomas. The present study examined the efficacy of 5-ALA PDT in vitro on benign pituitary adenoma cell cultures. METHODS: In group I experiments were performed on immortalized rat pituitary adenoma cells (GH3)...
June 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/26887580/laser-biospectroscopy-and-5-ala-fluorescence-navigation-as-a-helpful-tool-in-the-meningioma-resection
#17
A A Potapov, S A Goryaynov, V A Okhlopkov, L V Shishkina, V B Loschenov, T A Savelieva, D A Golbin, A P Chumakova, M F Goldberg, M D Varyukhina, A Spallone
5-aminolevulinic acid (5-ALA) is a natural precursor of protoporphyrin IX (PP IX), which possesses fluorescent properties and is more intensively accumulated in tumor cells than in normal tissue. Therefore, the use of 5-ALA in the surgical treatment of intracranial tumors, particularly gliomas, has gained popularity in the last years, whereas its use in other intracranial pathological entities including meningiomas has been reported occasionally. This study describes a series of 28 patients with intracranial meningiomas, who were administered 5-ALA for a better visualization of tumor boundaries...
July 2016: Neurosurgical Review
https://www.readbyqxmd.com/read/26885645/safety-and-efficacy-of-5-aminolevulinic-acid-for-high-grade-glioma-in-usual-clinical-practice-a-prospective-cohort-study
#18
Pilar Teixidor, Miguel Ángel Arráez, Glòria Villalba, Roser Garcia, Manel Tardáguila, Juan José González, Jordi Rimbau, Xavier Vidal, Eva Montané
BACKGROUND: During the last decade, the use of 5-aminolevulinic acid (5-ALA) has been steadily increasing in neurosurgery. The study's main objectives were to prospectively evaluate the effectiveness and safety of 5-ALA when used in clinical practice setting on high-grade gliomas' patients. METHODS: National, multicenter and prospective observational study. INCLUSION CRITERIA: authorized conditions of use of 5-ALA. EXCLUSION CRITERIA: contraindication to 5-ALA, inoperable or partial resected tumors, pregnancy and children...
2016: PloS One
https://www.readbyqxmd.com/read/26846106/hyperthermotherapy-enhances-antitumor-effect-of-5-aminolevulinic-acid-mediated-sonodynamic-therapy-with-activation-of-caspase-dependent-apoptotic-pathway-in-human-glioma
#19
Donghui Ju, Fumio Yamaguchi, Guangzhi Zhan, Tadashi Higuchi, Takayuki Asakura, Akio Morita, Hideo Orimo, Shaoshan Hu
Sonodynamic therapy (SDT) has shown great potential as an approach for cancer treatment, and hyperthermotherapy (HT) is also a promising cancer therapy. Here, we investigate whether HT could improve the efficacy of SDT and to make a preliminary exploration on potential mechanism. Xenograft tumor was established in nude mice model, and SNB19 and U87MG glioma cell lines were utilized for in vitro experiment. Alamar blue assay was performed to assess cell viability. Optical microscope was used to characterize the morphology changes of the glioma cells induced by SDT and HT treatments...
August 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/26815631/the-role-of-5-aminolevulinic-acid-in-brain-tumor-surgery-a-systematic-review
#20
REVIEW
Nicholas Ferraro, Eric Barbarite, Trevine R Albert, Emmanuel Berchmans, Ashish H Shah, Amade Bregy, Michael E Ivan, Tyler Brown, Ricardo J Komotar
Recently, 5-aminolevulinic acid (5-ALA) has been utilized as an adjuvant to the surgical resection of primary brain tumors and metastases. We conducted a systematic review of the literature to further understand the role of 5-ALA in neurosurgery. Our goal was to identify the utility of 5-ALA during resection by evaluating its sensitivity and specificity for different tumor types, as well as the extent of tumor resection achieved while using 5-ALA. A search of the literature was conducted using the PubMed database for the period January 1990 through May 2014...
October 2016: Neurosurgical Review
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