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aminolevulinic acid

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https://www.readbyqxmd.com/read/28223144/combination-of-hand-held-probe-and-microscopy-for-fluorescence-guided-surgery-in-the-brain-tumor-marginal-zone
#1
Johan Richter, Neda Haj-Hosseini, Martin Hallbeck, Karin Wårdell
BACKGROUND: Visualization of the tumor is crucial for differentiating malignant tissue from healthy brain during surgery, especially in the tumor marginal zone. The aim of the study was to introduce a fluorescence spectroscopy-based hand-held probe (HHF-probe) for tumor identification in combination with the fluorescence guided resection surgical microscope (FGR-micsorcope), and evaluate them in terms of diagnostic performance and practical aspects of fluorescence detection. METHODS: Eighteen operations were performed on 16 patients with suspected high-grade glioma...
February 18, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28214935/promotive-role-of-5-aminolevulinic-acid-on-chromium-induced-morphological-photosynthetic-and-oxidative-changes-in-cauliflower-brassica-oleracea-botrytis-l
#2
Rehan Ahmad, Shafaqat Ali, Fakhir Hannan, Muhammad Rizwan, Muhammad Iqbal, Zaidul Hassan, Nudrat Aisha Akram, Saliha Maqbool, Farhat Abbas
Chromium (Cr) is among the most toxic pollutants in the environment that adversely affect the living organisms and physiological processes in different plants. The present study investigated the effect of 15 mg L(-1) of 5-aminolevulinic acid (ALA) on morpho-physiological attributes of cauliflower (Brassica oleracea botrytis L.) under different Cr concentrations (0, 10, 100, and 200 μM) in the growth medium. The results showed that Cr stress decreased the growth, biomass, photosynthetic, and gas exchange parameters...
February 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28213091/convergence-of-hepcidin-deficiency-systemic-iron-overloading-heme-accumulation-and-rev-erb%C3%AE-%C3%AE-activation-in-aryl-hydrocarbon-receptor-elicited-hepatotoxicity
#3
Kelly A Fader, Rance Nault, Mathew P Kirby, Gena Markous, Jason Matthews, Timothy R Zacharewski
Persistent aryl hydrocarbon receptor (AhR) agonists elicit dose-dependent hepatic lipid accumulation, oxidative stress, inflammation, and fibrosis in mice. Iron (Fe) promotes AhR-mediated oxidative stress by catalyzing reactive oxygen species (ROS) production. To further characterize the role of Fe in AhR-mediated hepatotoxicity, male C57BL/6 mice were orally gavaged with sesame oil vehicle or 0.01-30μg/kg 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) every 4days for 28days. Duodenal epithelial and hepatic RNA-Seq data were integrated with hepatic AhR ChIP-Seq, capillary electrophoresis protein measurements, and clinical chemistry analyses...
February 16, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28204539/histopathological-insights-on-imaging-results-of-intraoperative-magnetic-resonance-imaging-5-aminolevulinic-acid-and-intraoperative-ultrasound-in-glioblastoma-surgery
#4
Jan Coburger, Angelika Scheuerle, Andrej Pala, Dietmar Thal, Christian Rainer Wirtz, Ralph König
No abstract text is available yet for this article.
February 14, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28191719/5-aminolevulinic-acid-mediated-photodynamic-therapy-for-bladder-cancer
#5
REVIEW
Keiji Inoue
Photodynamic therapy using 5-aminolevulinic acid is a treatment method in which the fluorescent substance of protoporphyrin IX excessively accumulated specifically in cancer cells is excited by visible red or green light irradiation, and reactive oxygen is produced and injures cancer cells. Photodynamic therapy using 5-aminolevulinic acid less markedly influences the surrounding normal cells and tissue as a result of no accumulation of protoporphyrin IX, being a low-invasive, less harmful treatment localized to cancer...
February 2017: International Journal of Urology: Official Journal of the Japanese Urological Association
https://www.readbyqxmd.com/read/28173486/letter-combining-5-aminolevulinic-acid-fluorescence-and-intraoperative-magnetic-resonance-imaging-in-glioblastoma-surgery-a-histology-based-evaluation
#6
Alessandro Della Puppa, Oriela Rustemi, Elena Rampazzo, Luca Persano
No abstract text is available yet for this article.
February 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28169355/enhancement-of-5-aminolevulinic-acid-based-fluorescence-detection-of-side-population-defined-glioma-stem-cells-by-iron-chelation
#7
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/28168737/unilesional-plantar-mycosis-fungoides-treated-with-topical-photodynamic-therapy-case-report-and-review-of-the-literature
#8
Fabrice Kaufmann, Natascha Kettelhack, Norbert Hilty, Werner Kempf
BACKGROUND: Unilesional mycosis fungoides (UMF) and pagetoid reticulosis (PR) are variants of mycosis fungoides. Conventional therapy comprises surgical excision or radiotherapy which may be associated with long-term side effects, especially when the lesion is located at a special site like the palms and soles. Therefore, alternative treatment options are needed to treat solitary lesions in the case of UMF or PR. Recently topical photodynamic therapy (PDT) has been described to be an efficient and non-invasive therapeutical option with excellent clinical outcome...
February 6, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28163981/current-advances-in-5-aminolevulinic-acid-mediated-photodynamic-therapy
#9
Connor Thunshelle, Rui Yin, Qiquan Chen, Michael R Hamblin
Kennedy and Pottier discovered that photodynamic therapy (PDT) could be carried out using a procedure consisting of topical application of the porphyrin-precursor, 5-aminolevulinic acid (ALA) to the skin, followed after some time by illumination with various light parameters in the 1980s. Since then, ALA-PDT has expanded enormously and now covers most aspects of dermatological disease. The purpose of this review is to discuss a range of ingenious strategies that investigators have devised for improving the overall outcome (higher efficiency and lower side effects) of ALA-PDT...
September 2016: Current Dermatology Reports
https://www.readbyqxmd.com/read/28160831/-glioblastoma-innovations-in-surgery
#10
Thiebaud Picart, Jacques Guyotat
One of the innovative principles in glioblastoma surgery consists in making the tumour fluorescent in order for it to be more easily visualised during the procedure. 5-aminolevulinic acid (5-ALA) undergoes an enzyme transformation, turning into another molecule, protoporphyrine IX (PPIX) whose property is fluorescence. It emits red light when it is stimulated by blue light.
February 2017: Revue de L'infirmière
https://www.readbyqxmd.com/read/28139326/bisphenol-a-effects-on-the-chlorophyll-contents-in-soybean-at-different-growth-stages
#11
Liya Jiao, Hezhou Ding, Lihong Wang, Qing Zhou, Xiaohua Huang
Bisphenol A (BPA), a suspected endocrine disruptor, can modify normal plant growth and development. Photosynthesis provides material and energy for the growth and development of plants, in which chlorophyll (Chl) plays a significant role. Many studies have shown that the growth and metabolism of plants vary at different growth stages. Thus the sensitivity of plant's responses to environmental pollution is correspondingly different. We studied the effects of BPA on the Chl contents of soybean (Glycine Max L...
April 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28138695/involvement-of-retinoblastoma-associated-protein%C3%A2-48-during-photodynamic-therapy-of-cervical-cancer-cells
#12
Shuxia Wu, Lijun Wang, Xingye Ren, Yulu Pan, Yan Peng, Xiaoyan Zou, Cuige Shi, Youzhong Zhang
5-Aminolevulinic acid-mediated photodynamic therapy (ALA‑PDT) is an effective treatment option for cervical intraepithelial neoplasia, the precancerous lesion of cervical cancer, and early cervical cancer, particularly for young or nulliparous women who want to remain fertile. A previous report described the involvement of histone deacetylases (HDAC) during ALA‑PDT mediated apoptosis in the cerebral cortex of a mouse model. Retinoblastoma‑associated protein 48 (RbAp48), a highly abundant component of HDACs, is a critical mediator that controls the transforming activity of human papillomavirus 16 in cervical cancer cells...
January 26, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28132645/5-aminolevulinic-acid-combined-with-ferrous-ion-reduces-adiposity-and-improves-glucose-tolerance-in-diet-induced-obese-mice-via-enhancing-mitochondrial-function
#13
Urara Ota, Takeshi Hara, Hitoshi Nakagawa, Emi Tsuru, Masayuki Tsuda, Atsuko Kamiya, Yasushi Kuroda, Yuya Kitajima, Aya Koda, Masahiro Ishizuka, Hideo Fukuhara, Keiji Inoue, Taro Shuin, Motowo Nakajima, Tohru Tanaka
BACKGROUND: Mitochondrial dysfunction is associated with obesity and various obesity-associated pathological conditions including glucose intolerance. 5-Aminolevulinic acid (ALA), a precursor of heme metabolites, is a natural amino acid synthesized in the mitochondria, and various types of cytochromes containing heme contribute to aerobic energy metabolism. Thus, ALA might have beneficial effects on the reduction of adiposity and improvement of glucose tolerance through its promotion of heme synthesis...
January 30, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28130791/photodynamic-therapy-for-dermatologic-conditions-in-the-pediatric-population-a-literature-review
#14
REVIEW
Neha Kumar, Christine B Warren
BACKGROUND: Photodynamic therapy (PDT), using topical aminolevulinic acid (ALA), has been used for years to treat a variety of dermatologic conditions, including actinic keratosis, superficial basal cell carcinoma, and in situ squamous cell carcinoma. While there is a wide range of neoplastic and non-neoplastic skin diseases for which ALA-PDT is used in adults, there is a knowledge gap when it comes to its use in children. This review highlights what is currently known regarding the use and efficacy of this therapy in the pediatric population...
January 28, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/28127949/glycolysis-inhibition-improves-photodynamic-therapy-response-rates-for-equine-sarcoids
#15
J P Golding, J G Kemp-Symonds, J M Dobson
Photodynamic therapy (PDT) holds great promise in treating veterinary and human dermatological neoplasms, including equine sarcoids, but is currently hindered by the amount of photosensitiser and light that can be delivered to lesions thicker than around 2 mm, and by the intrinsic antioxidant defences of tumour cells. We have developed a new PDT technique that combines an efficient transdermal penetration enhancer solution, for topical delivery of 5-aminolevulinic acid (ALA) photosensitiser, with acute topical post-PDT application of the glycolysis inhibitor lonidamine...
January 27, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28119140/a-clinical-evaluation-of-the-efficacy-of-photodynamic-therapy-in-the-treatment-of-erosive-oral-lichen-planus-a-case-series
#16
Magdalena Sulewska, Ewa Duraj, Stefan Sobaniec, Alfreda Graczyk, Robert Milewski, Marta Wróblewska, Jan Pietruski, Małgorzata Pietruska
BACKGROUND: Erosive oral lichen planus (EOLP) poses a substantial risk of malignant transformation into squamous cell cancer. The absence of established treatment gives way to alternative therapeutic strategies, including photodynamic therapy. The aim of the study was to evaluate the efficacy of PDT in the treatment of EOLP. METHODS: Twelve female patients aged 63-80 with 22 OLP lesions (16 on the buccal mucosa, 6 on gingiva and tongue), underwent authors' own PDT scheme with the use of 5% solution of 5-aminolevulinic acid (ALA) as photosensitizer...
January 21, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28118809/involvement-of-protoporphyrin-ix-accumulation-in-the-pathogenesis-of-isoniazid-rifampicin-induced-liver-injury-the-prevention-of-curcumin
#17
Leiyan He, Yaoxue Guo, Ye Deng, Chun Li, Chengzi Zuo, Wenxing Peng
Combination of isoniazid (INH) and rifampicin (RFP) causes liver injury frequently among tuberculosis patients. However, mechanisms of the hepatotoxicity are not entirely understood. Protoporphyrin IX (PPIX) accumulation, as an endogenous hepatotoxin, resulting from isoniazid and rifampicin co-therapy (INH/RFP) has been reported in PXR-humanized mice. Aminolevulinic acid synthase1 (ALAS1), ferrochelatase (FECH) and breast cancer resistance protein (BCRP) play crucial roles in PPIX synthesis, metabolism and transport, respectively...
February 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/28108825/photodynamic-therapy-for-the-treatment-of-complex-anal-fistula
#18
A Arroyo, P Moya, M A Rodríguez-Prieto, M J Alcaide, M M Aguilar, M Bellón, M T Pérez-Vázquez, F Candela, R Calpena
BACKGROUND: Photodynamic therapy (PDT) is a new procedure for the treatment of anal fistula. This preliminary study was designed to investigate the safety and effectiveness of this new technique in the treatment of anal fistula. METHODS: Ten patients were treated with PDT. Intralesional 5-aminolevulinic acid (ALA) 2% was directly injected into the fistula. The internal and external orifices were closed. After an incubation period of 2 h, the fistula was irradiated using an optical fibre connected to a red laser (MULTIDIODE 630 PDT, INTERmedic, Spain) operating at 1 W/cm for 3 min (180 Joules)...
January 20, 2017: Techniques in Coloproctology
https://www.readbyqxmd.com/read/28108283/aminoleveulinate-photodynamic-therapy-ala-pdt-for-bowen-s-disease-in-a-sle-patient-case-report-and-literature-review
#19
Ting Lv, Jie-Chen Zhang, Fei-Miao, Hong-Wei Wang
We reported a rare case of topical 5-aminolevulinic acid (ALA)-photodynamic therapy (PDT) in the treatment of a systemic lupus erythematosus (SLE) patient with lower limb multiple Bowen's disease (BD). At the end of the treatment, an excellent clinical response was observed and no recurrence of rash after 2 months of treatment. The recovery time was prolonged only after the first treatment, however, no photosensitive phenomena were observed during and after the treatment. This is the first report to describe ALA-PDT for patient-confirmed photosensitivity in an Asian patient...
January 17, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28097209/fluorescence-guided-resection-of-brain-tumor-review-of-the-significance-of-intraoperative-quantification-of-protoporphyrin-ix-fluorescence
#20
REVIEW
Zheng Huang, Songsheng Shi, Haixia Qiu, Desheng Li, Jian Zou, Shaoshan Hu
Surgical removal of tumor mass is a common approach in the management of brain tumors. However, the precise delineation of normal tissue from tumor tissue for a complete resection of tumor mass in brain tumor surgery remains a difficult task for neurosurgeons. Aminolevulinic acid (ALA)-mediated exgogenous fluorescence of protoporphyrin IX (PpIX) is a sensitive approach for tumor imaging. Recent studies suggest that the use of ALA/PpIX-mediated fluorescence-guided resection (FGR) or fluorescence-guided surgery can enable more accurate and complete resection of brain tumors, especially when used in quantitative fashion...
January 2017: Neurophotonics
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