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aminolevulinic acid

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https://www.readbyqxmd.com/read/29148924/influence-of-gestational-diabetes-on-the-activity-of-%C3%AE-aminolevulinate-dehydratase-and-oxidative-stress-biomarkers
#1
Fabiane Rodrigues, Leidiane de Lucca, Walter S Neme, Thissiane de Lima Gonçalves
OBJECTIVES: This study aimed to evaluate the activity of delta-aminolevulinate dehydratase (δ-ALA-D) and oxidative stress biomarkers in pregnant women with gestational diabetes mellitus (GDM), in order to demonstrate the involvement of oxidative stress in this condition, which presents pathophysiology still undetermined. METHODS: δ-ALA-D activity, lipid peroxidation estimated as the levels of thiobarbituric acid reactive substances (TBARS), protein (P-SH) and non-protein thiol (NP-SH) content, catalase (CAT) activity and concentration of vitamin C (VIT C) in samples of pregnant women with GDM (n = 48) and in healthy pregnant women (n = 30), who constituted the control group...
November 17, 2017: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29142297/5-aminolevulinic-acid-guided-sampling-of-glioblastoma-microenvironments-identifies-pro-survival-signaling-at-infiltrative-margins
#2
James L Ross, Lee A D Cooper, Jun Kong, David Gutman, Merete Williams, Carol Tucker-Burden, Myles R McCrary, Alexandros Bouras, Milota Kaluzova, William D Dunn, Duc Duong, Constantinos G Hadjipanayis, Daniel J Brat
Glioblastoma (GBM) contains diverse microenvironments with uneven distributions of oncogenic alterations and signaling networks. The diffusely infiltrative properties of GBM result in residual tumor at neurosurgical resection margins, representing the source of relapse in nearly all cases and suggesting that therapeutic efforts should be focused there. To identify signaling networks and potential druggable targets across tumor microenvironments (TMEs), we utilized 5-ALA fluorescence-guided neurosurgical resection and sampling, followed by proteomic analysis of specific TMEs...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29139243/wide-field-spectrally-resolved-quantitative-fluorescence-imaging-system-toward-neurosurgical-guidance-in-glioma-resection
#3
Yijing Xie, Maria Thom, Michael Ebner, Victoria Wykes, Adrien Desjardins, Anna Miserocchi, Sebastien Ourselin, Andrew W McEvoy, Tom Vercauteren
In high-grade glioma surgery, tumor resection is often guided by intraoperative fluorescence imaging. 5-aminolevulinic acid-induced protoporphyrin IX (PpIX) provides fluorescent contrast between normal brain tissue and glioma tissue, thus achieving improved tumor delineation and prolonged patient survival compared with conventional white-light-guided resection. However, commercially available fluorescence imaging systems rely solely on visual assessment of fluorescence patterns by the surgeon, which makes the resection more subjective than necessary...
November 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29139095/local-alkylating-chemotherapy-applied-immediately-after-5-ala-guided-resection-of-glioblastoma-does-not-provide-additional-benefit
#4
William Sage, Mathew Guilfoyle, Catriona Luney, Adam Young, Rohitashwa Sinha, Donatella Sgubin, Joseph H McAbee, Ruichong Ma, Sarah Jefferies, Rajesh Jena, Fiona Harris, Kieren Allinson, Tomasz Matys, Wendi Qian, Thomas Santarius, Stephen Price, Colin Watts
Grade IV glioma is the most common and aggressive primary brain tumour. Gross total resection with 5-aminolevulinic acid (5-ALA) guided surgery combined with local chemotherapy (carmustine wafers) is an attractive treatment strategy in these patients. No previous studies have examined the benefit carmustine wafers in a treatment programme of 5-ALA guided resection followed by a temozolomide-based chemoradiotherapy protocol. The objective of this study was to examine the benefit of carmustine wafers on survival in patients undergoing 5-ALA guided resection...
November 14, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29131243/photodynamic-therapy-with-5-aminolevulinic-acid-suppresses-ifn-%C3%AE-induced-k17-expression-in-hacat-cells-via-mapk-pathway
#5
X-L Wang, Q Sun
OBJECTIVE: Psoriasis is a chronic inflammatory skin disorder that greatly affects the patient's quality of life. Photodynamic therapy (PDT) with 5-aminolevulinic acid (ALA) has recently been applied for inflammatory dermatoses including psoriasis. However, the therapeutic effect of ALA-PDT is yet to be validated, and the underlying mechanisms remain unclear. MATERIALS AND METHODS: In this study, a psoriatic model was established by treating HaCaT cells with 250 U/ml IFN-γ for 48 h...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29129543/idiopathic-elastosis-perforans-serpiginosa-with-satisfactory-response-after-5-ala-photodynamic-therapy
#6
S Alique-García, J Company-Quiroga, C Horcajada-Reales, B Echeverría-García, J C Tardío-Dovao, J Borbujo
Photodynamic therapy (PDT) involves the use of photochemical reactions mediated through the interaction of photosensitizing agents, light, and oxygen for the treatment of malignant or benign diseases. Topical photosensitizers employed in dermatology are 5-aminolevulinic acid (5 ALA) and methyl aminolevulinate, classically used for the treatment of superficial non-melanoma skin cancer and their precursors. Recently the efficacy of PDT has been introduced in other benign diseases. Elastosis perforans serpiginosa (EPS) is a rare skin disorder characterized by transepidermal elimination of abnormal elastic fibers...
November 9, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29126958/effects-of-led-based-photodynamic-therapy-using-red-and-blue-lights-with-natural-hydrophobic-photosensitizers-on-human-glioma-cell-line
#7
Zahra Jamali, Sedigheh Marjaneh Hejazi, Seyed Mohsen Ebrahimi, Hemen Moradi-Sardareh, Maliheh Paknejad
Photodynamic therapy (PDT) has received high attention in cancer treatment due to its minimal side effects, specific cancer-targeting, non-invasion and low cost. It utilizes a specific group of anti-cancer drugs called photosensitizers (PS), which can be only activated under a certain wavelength light illumination and kills cancer cells. To screen the potential of PS and setup of PDT treatment protocol, it is essential to assess the PDT efficacy in vitro. In this study, a light-emitting diode- (LED-) based illumination system at two wavelengths (red & blue) with homogeneous and stable irradiation, and constant temperature conditions in 96-well plates was provided...
November 7, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29121788/fluorescence-image-guided-neurosurgery
#8
Sadao Kaneko, Muftah S Eljamel
Surgery plays an important role in the management of high-grade gliomas (HGG) and imparts significant tumor-free and overall survival advantages. However HGG margins are often invisible, making their gross total resection (GTR) a difficult task. Hence intraoperative technology such as intraoperative fluorescence was a revolutionary discovery. A critical literature review revealed fluorescence improved the GTR of HGG from 36% using standard surgery to 74.5 and 84.4% using aminolevulinic acid (ALA) or fluorescein (FLCN), respectively...
November 2017: Future Oncology
https://www.readbyqxmd.com/read/29121778/intraoperative-image-guided-surgery-in-neuro-oncology-with-specific-focus-on-high-grade-gliomas
#9
Syed O Mahboob, Muftah Eljamel
Surgery is paramount in glioma management and extent of resection is an independent significant prognostic factor. However, these tumors are often invisible intraoperatively. Hence imaging plays an important role in surgical guidance. A critical literature review, using MEDLINE/PubMed service was carried out. It demonstrated a gross total resection (GTR) with neuronavigation (NNS) of 31-36%, adding 5-aminolevulinic acid or fluorescein fluorescence, or intraoperative ultrasound or MRI improved GTR to 69.1, 84...
November 2017: Future Oncology
https://www.readbyqxmd.com/read/29106077/in-silico-studies-of-mammalian-%C3%AE-alad-interactions-with-selenides-and-selenoxides
#10
Pablo Andrei Nogara, João Batista Teixeira Rocha
Previous studies have shown that the mammalian δ-aminolevulinic acid dehydratase (δ-ALAD) is inhibited by selenides and selenoxides, which can involve thiol oxidation. However, the precise molecular interaction of selenides and selenoxides with the active center of the enzyme is unknown. Here, we try to explain the interaction of selenides and the respective selenoxides with human δ-ALAD by in silico molecular docking. The in silico data indicated that Se atoms of selenoxides have higher electrophilic character than their respective selenides...
November 6, 2017: Molecular Informatics
https://www.readbyqxmd.com/read/29101863/contemporary-use-of-intraoperative-imaging-in-glioma-surgery-a-survey-among-eans-members
#11
Jan Coburger, Arya Nabavi, Ralph König, Christian Rainer Wirtz, Andrej Pala
OBJECTIVES: In glioma surgery, intraoperative imaging is regarded highly valuable to improve extent of resection. Current distribution of intraoperative imaging techniques is largely unknown. Further, controversy exists which method might be most beneficial. PATIENTS AND METHODS: We performed a web-based survey among members of the European Association of Neurological Surgeons(EANS) from April to May 2017. Our questionnaire included intraoperative MRI(iMRI), 5-aminolevulinic acid(5-ALA), intraoperative ultrasound(iUS),Na-Fluorescein and intraoperative CT(iCT)...
December 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29100394/effects-of-photodynamic-therapy-on-dermal-fibroblasts-from-xeroderma-pigmentosum-and-gorlin-goltz-syndrome-patients
#12
Alicia Zamarrón, Marta García, Marcela Del Río, Fernando Larcher, Ángeles Juarranz
PDT is widely applied for the treatment of non-melanoma skin cancer pre-malignant and malignant lesions (actinic keratosis, basal cell carcinoma and in situ squamous cell carcinoma). In photodynamic therapy (PDT) the interaction of a photosensitizer (PS), light and oxygen leads to the formation of reactive oxygen species (ROS) and thus the selective tumor cells eradication. Xeroderma pigmentosum (XP) and Gorlin-Goltz Syndrome (GS) patients are at high risk of developing skin cancer in sun-exposed areas. Therefore, the use of PDT as a preventive treatment may constitute a very promising therapeutic modality for these syndromes...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29089721/pharmaceutical-approval-update
#13
Michele B Kaufman
Aminolevulinic acid hydrochloride (Gleolan) for the visualization of malignant tissue during surgery; delafloxacin (Baxdela) for certain acute bacterial skin infections; and glecaprevir/pibrentasvir (Mavyret) for chronic HCV infection.
November 2017: P & T: a Peer-reviewed Journal for Formulary Management
https://www.readbyqxmd.com/read/29088999/antioxidant-antihyperglycemic-and-antidyslipidemic-effects-of-brazilian-native-fruit-extracts-in-an-animal-model-of-insulin-resistance
#14
Juliane de Souza Cardoso, Pathise Souto Oliveira, Natália Pontes Bona, Flávia Aleixo Vasconcellos, Jucimara Baldissarelli, Marcia Vizzotto, Mayara Sandrielly Pereira Soares, Vanessa Plasse Ramos, Roselia Maria Spanevello, Claiton Leoneti Lencina, Rejane Giacomelli Tavares, Francieli Moro Stefanello
OBJECTIVE: Insulin resistance (IR) plays an important role in the development of many diseases, such as diabetes mellitus. Therefore, the aim of the present study was to evaluate the effects of the extracts from fruits native to Brazil on metabolic parameters and hepatic oxidative markers in an animal model of insulin resistance induced by dexamethasone (DEX). METHODS: Wistar rats received water or extracts of Eugenia uniflora or Psidium cattleianum, once a day for 21 days...
October 31, 2017: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29079348/secretion-of-the-angiogenic-factor-vegf-after-photodynamic-therapy-with-ala-under-hypoxia-like-conditions-in-colon-cancer-cells
#15
Aleksandra Kawczyk-Krupka, Beata Kwiatek, Zenon Czuba, Anna Mertas, Wojciech Latos, Thomas Verwanger, Barbara Krammer, Aleksander Sieroń
BACKGROUND: Photodynamic therapy (PDT), eliminates not only the tumor, but also modulates signaling factors release, e.g. vascular endothelial growth factor (VEGF), which plays a crucial role in cancer progression. Assessment of the VEGF-secreting activity of resistant colon cancer cells in different degree of malignancy: SW480 and SW620 under hypoxia-like conditions during δ- aminolevulinic acid (ALA) PDT was the objective of our study. METHODS: The colon cancer cell lines SW480 and SW620 were treated in sublethal doses with ALA PDT in hypoxia- like conditions with cobalt chloride (CoCl2)...
October 24, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29076783/systematic-histopathological-analysis-of-different-5-aminolevulinic-acid-induced-fluorescence-levels-in-newly-diagnosed-glioblastomas
#16
Barbara Kiesel, Mario Mischkulnig, Adelheid Woehrer, Mauricio Martinez-Moreno, Matthias Millesi, Ammar Mallouhi, Thomas Czech, Matthias Preusser, Johannes A Hainfellner, Stefan Wolfsberger, Engelbert Knosp, Georg Widhalm
OBJECTIVE Glioblastoma (GBM) is characterized by distinct intratumoral histopathological heterogeneity with regard to variable tumor morphology, cell proliferation, and microvascularity. Maximum resection of a GBM results in an improved prognosis and thus represents the aim of surgery in the majority of cases. Fluorescence-guided surgery using 5-aminolevulinic acid (5-ALA) is currently widely applied for improved intraoperative tumor visualization in patients with a GBM. Three intratumoral fluorescence levels (i...
October 27, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29071138/photodynamic-diagnosis-in-upper-urinary-tract-urothelial-carcinoma-a-systematic-review
#17
REVIEW
Elsawi Osman, Ziad Alnaib, Nitya Kumar
OBJECTIVE: To assess the diagnostic accuracy and safety of photodynamic diagnosis (PDD) in upper urinary tract urothelial carcinoma (UUTUC). MATERIALS AND METHODS: A systematic literature search was conducted. Included studies were assessed for the risks of bias and quality using appropriate tools. Dedicated data extraction forms were used. Diagnostic accuracy in terms of sensitivity and specificity were quoted whenever provided by individual studies. A combined toxicity profile of 5-aminolevulinic acid (5ALA) was given after reviewing individual studies...
June 2017: Arab Journal of Urology
https://www.readbyqxmd.com/read/29068550/5-aminolevulinic-acid-exerts-renoprotective-effect-via-nrf2-activation-in-murine-rhabdomyolysis-induced-acute-kidney-injury
#18
Atsushi Uchida, Kengo Kidokoro, Yuji Sogawa, Seiji Itano, Hajime Nagasu, Minoru Satoh, Tamaki Sasaki, Naoki Kashihara
AIM: Acute kidney injury (AKI) is associated with chronic kidney disease (CKD), as well as high mortality, but effective treatments for AKI are still lacking. A recent study reported the prevention of renal injury, such as ischemia-reperfusion injury (IRI), by 5-aminolevulinic acid (ALA), which induces an antioxidant effect. The current study aimed to investigate the effect of ALA in a rhabdomyolysis-induced mouse model of AKI created by intramuscular injection of 50% glycerol. METHODS: Rhabdomyolysis-induced AKI was induced by an intramuscular injection of glycerol (5 ml/kg body weight) into mice...
October 25, 2017: Nephrology
https://www.readbyqxmd.com/read/29062152/nematicidal-effects-of-5-aminolevulinic-acid-on-plant-parasitic-nematodes
#19
Feixue Cheng, Jian Wang, Zhiqiang Song, Ju'e Cheng, Deyong Zhang, Yong Liu
Plant-parasitic nematodes are important agricultural pests and often cause serious crop losses. Novel, environmental friendly nematicides are urgently needed because of the harmful effects of some existing nematicides on human health. 5-Aminolevulinic acid (ALA) was reported as a potential biodegradable herbicide, insecticide, or plant-growth promoting agent. Lack of information on ALA against plant-parasitic nematodes prompted this investigation to determine the effects of ALA on Meloidogyne incognita, Heterodera glycines, Pratylenchus coffeae, and Bursaphelenchus xylophilus...
September 2017: Journal of Nematology
https://www.readbyqxmd.com/read/29056554/development-of-a-novel-schiff-base-derivative-for-enhancing-the-anticancer-potential-of-5-aminolevulinic-acid-based-photodynamic-therapy
#20
Yusei Shinohara, Yoshio Endo, Chiaki Abe, Ikkyu Shiba, Masahiro Ishizuka, Tohru Tanaka, Yutaka Yonemura, Shun-Ichiro Ogura, Masahide Tominaga, Hisatsugu Yamada, Yoshihiro Uto
5-Aminolevulinic acid (ALA), a precursor of protoporphyrin IX (PpIX), is now widely used for photodynamic diagnosis (ALA-PDD) and photodynamic therapy (ALA-PDT) of various cancers. Recently, we found that treatment of cancer cells with the Schiff base derivative TX-816 along with ALA could significantly increase the efficacy of ALA-PDT. This enhancing effect of TX-816 on ALA-PDT is attributed to 3,5-dichlorosalicylaldehyde (DCSA), a molecule produced by the degradation of TX-816. Similar to TX-816, DCSA significantly enhances the effect of ALA-PDT...
October 19, 2017: Photodiagnosis and Photodynamic Therapy
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