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5-aminolevulinic acid

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https://www.readbyqxmd.com/read/29774871/-progression-of-basic-research-clinical-application-of-photodynamic-therapy-and-fluorescence-guided-surgery-in-glioma-treatment
#1
Xuegang Li, Hua Feng, Fei Li
The prognosis of glioma remains poor because of the infiltrative nature and the high local relapse rate. The current goals for patients with gliomas is maximal safe resection and adjuvant therapy. Tumor-specific photosensitizer, such as hematoporphyrin derivative (HpD) 5-aminolevulinic acid (5-ALA), can be selective up-taken and accumulated in tumor tissue. Light with appropriate wavelength can penetrate tumor tissue and excite the photosensitizer. The excited photosensitizer within glioma cells permits fluorescence visualization of tumor tissue during surgery and has been introduced in treatment of glioma as fluorescence-guided surgery (FGS)...
April 28, 2018: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29767317/successful-sequential-treatment-with-itraconazole-and-ala-pdt-for-cutaneous-granuloma-by-candida-albicans-a-case-report-and-literature-review
#2
Qing Cai, Lian-Juan Yang, Jia Chen, Hong Yang, Zhi-Qin Gao, Xiu-Li Wang
Photodynamic therapy (PDT) is a process that combines a photosensitizing drug and light and promotes phototoxic responses in target cells, mainly via oxidative damage. Antifungal photodynamic therapy has been successfully employed against Candida species, dermatophytes, and deep mycoses. We present a case of a cutaneous granuloma caused by C. albicans treated with 5-aminolevulinic acid (ALA)-PDT. A 64-year-old man presented with two plaques on his right hand and wrist for 2 years. The diagnosis was made based on histopathology, mycology, and molecular identification of paraffin-embedded tissues...
May 16, 2018: Mycopathologia
https://www.readbyqxmd.com/read/29766937/enhanced-resection-of-primary-high-grade-gliomas-using-a-combination-of-intraoperative-magnetic-resonance-imaging-and-intraoperative-fluorescence-5-aminolevulinic-acid-a-single-centre-experience
#3
Vikas Sharma, Rishabh Kedia, Karanjit S Narang, Ajaya N Jha
Background: The extent of resection (EOR) of a tumor is a proven prognostic factor in patients undergoing surgery for suspected high grade glioma. A few recent publications have shown the importance of intraoperative magnetic resonance imaging (iMRI) with 5-aminolevulinic acid (5-ALA) fluorescence-guidance in order to maximally increase the EOR. Aim: The objective of our study was to calculate the effect on survival of patients with high grade gliomas of resection using both iMRI and 5-ALA fluorescence-guidance as intraoperative adjuncts...
May 2018: Neurology India
https://www.readbyqxmd.com/read/29763901/5-aminolevulinic-acid-mediated-sonodynamic-therapy-alleviates-atherosclerosis-via-enhancing-efferocytosis-and-facilitating-a-shift-in-the-th1-th2-balance-toward-th2-polarization
#4
Yang Yang, Yuanyuan Liu, Xi Chen, Jie Gong, Zhen Huang, Wei Wang, Yuanqi Shi, Yu Wang, Jianting Yao, Zhaoqian Shen, Zhen Tian, Hong Jin, Ye Tian
BACKGROUND/AIMS: We and other groups have demonstrated that 5-aminolevulinic acid (ALA)-mediated sonodynamic therapy (ALA-SDT) induces macrophage and foam cell apoptosis and stabilizes atherosclerosis (AS) plaques in animal models. Lymphocytes also play vital roles in the development of AS. The primary purpose of the present study was to investigate the effects of ALA-SDT on T helper (Th) cell fate and function, Th subset differentiation, and atherosclerotic lesion stability. METHODS: We utilized ALA-SDT on Western diet-fed apoE-/-mice in vivo and human Jurkat cells in vitro...
May 9, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29760987/5-ala-fluorescence-and-laser-doppler-flowmetry-for-guidance-in-a-stereotactic-brain-tumor-biopsy
#5
Neda Haj-Hosseini, Johan C O Richter, Peter Milos, Martin Hallbeck, Karin Wårdell
A fiber optic probe was developed for guidance during stereotactic brain biopsy procedures to target tumor tissue and reduce the risk of hemorrhage. The probe was connected to a setup for the measurement of 5-aminolevulinic acid (5-ALA) induced fluorescence and microvascular blood flow. Along three stereotactic trajectories, fluorescence (n = 109) and laser Doppler flowmetry (LDF) (n = 144) measurements were done in millimeter increments. The recorded signals were compared to histopathology and radiology images...
May 1, 2018: Biomedical Optics Express
https://www.readbyqxmd.com/read/29753693/oral-administration-of-5-aminolevulinic-acid-induces-heme-oxygenase-1-expression-in-peripheral-blood-mononuclear-cells-of-healthy-human-subjects-in-combination-with-ferrous-iron
#6
Hidenori Ito, Yoshiaki Nishio, Takeshi Hara, Hidemitsu Sugihara, Tohru Tanaka, Xiao-Kang Li
Heme oxygenase-1 (HO-1) is a major anti-inflammatory enzyme and a key regulator that induces immune tolerance through affecting the differentiation of dendritic cells. The aim of this study is to determine whether the combination of 5-aminolevulinic acid (ALA) and iron induces HO-1 expression in healthy human peripheral blood mononuclear cells (PBMC). The study was an open labeled, non-randomized, non-placebo-controlled trial using healthy male adults and consisted of three parts. Study A aimed to find the peak HO-1 expression at 0, 1, 2, 3, 4, 6, 8, 12, 16, and 24h after administration...
May 10, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29752702/daylight-photodynamic-therapy-for-actinic-keratoses
#7
REVIEW
Colin A Morton, Lasse R Braathen
Topical photodynamic therapy (PDT) using daylight is effective in the treatment of actinic keratoses (AKs), offering the potential for treatment of large fields such as full face and balding scalp, but with minimal therapy-associated pain. Comparison with conventional PDT indicates similar efficacy for thin and moderate-thickness AKs, but with significantly less discomfort/pain, driving a patient preference for daylight-mediated PDT (DL-PDT) compared with conventional PDT using high-intensity office/hospital-based light sources...
May 11, 2018: American Journal of Clinical Dermatology
https://www.readbyqxmd.com/read/29746502/potential-involvement-of-the-18-kda-translocator-protein-and-reactive-oxygen-species-in-apoptosis-of-thp-1-macrophages-induced-by-sonodynamic-therapy
#8
Xin Sun, Shuyuan Guo, Wei Wang, Zhengyu Cao, Juhua Dan, Jiali Cheng, Wei Cao, Fang Tian, Wenwu Cao, Ye Tian
Sonodynamic therapy (SDT) with exogenous protoporphyrin IX (PpIX) or endogenous PpIX derived from 5-aminolevulinic acid (ALA) has been carried out to produce apoptotic effects on macrophages, indicating a potential treatment methodology for atherosclerosis. Our previous studies have found that mitochondria damage by reactive oxygen species (ROS) plays a major role in the SDT-induced apoptosis. This study aimed at investigating the potential involvement of the mitochondrial 18 kDa translocator protein (TSPO) and ROS in the pro-apoptotic effects of SDT on THP-1 macrophages...
2018: PloS One
https://www.readbyqxmd.com/read/29744279/pathway-engineering-in-corynebacterium-glutamicum-s9114-for-5-aminolevulinic-acid-production
#9
Bin Zhang, Bang-Ce Ye
5-Aminolevulinic acid (ALA) is a non-protein amino acid with a significant potential for cancer treatment and plant stress resistance. Microbial fermentation has gradually replaced the traditional chemical-based method for ALA production, thus increasing the need for high-ALA-producing strains. In this study, we engineered the glutamate producing strain, Corynebacterium glutamicum S9114, for ALA production. To efficiently convert l-glutamate to ALA, hemA and hemL from Salmonella typhimurium and Escherichia coli were tandemly overexpressed...
May 2018: 3 Biotech
https://www.readbyqxmd.com/read/29742173/photodynamic-diagnosis-with-methyl-5-aminolevulinate-in-squamous-intraepithelial-lesions-of-the-vulva-experimental-research
#10
Lea Leufflen, Aurelie Francois, Julia Salleron, Catherine Barlier, Gilles Dolivet, Frederic Marchal, Lina Bezdetnaya
The incidence of the High-grade Squamous Intraepithelial Lesion of the vulva, formerly vulvar intra-epithelial neoplasia is progressively increasing. Today, an early detection and a precise localization of vulvar lesions are still problematic issues, due to the lack of accuracy of the available diagnostic tool. A new approach is the photodynamic diagnosis based on the fluorescence detection of protoporphyrin IX (PpIX) in cancer cells after topical application of a cream of methyl amino-levulinic acid. This study aimed to evaluate the effectiveness of photodiagnosis in order to discriminate the intensity of PpIX fluorescence between vulvar tumor and healthy skin...
2018: PloS One
https://www.readbyqxmd.com/read/29740228/use-of-wood-vinegar-to-enhance-5-aminolevulinic-acid-production-by-selected-rhodopseudomonas-palustris-in-rubber-sheet-wastewater-for-agricultural-use
#11
Tomorn Nunkaew, Duangporn Kantachote, Sumate Chaiprapat, Teruhiko Nitoda, Hiroshi Kanzaki
This study aimed to produce inexpensive 5-aminolevulinic acid (ALA) in a non-sterile latex rubber sheet wastewater (RSW) by Rhodopseudomonas palustris TN114 and PP803 for the possibility to use in agricultural purposes by investigating the optimum conditions, and applying of wood vinegar (WV) as an economical source of levulinic acid to enhance ALA content. The Box-Behnken Design experiment was conducted under microaerobic-light conditions for 96 h with TN114, PP803 and their mixed culture (1:1) by varying initial pH, inoculum size (% v/v) and initial chemical oxygen demand (COD, mg/L)...
May 2018: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/29740015/effects-of-5-aminolevulinic-acid-supplementation-on-home-based-walking-training-achievement-in-middle-aged-depressive-women-randomized-double-blind-crossover-pilot-study
#12
Hiroshi Suzuki, Shizue Masuki, Akiyo Morikawa, Yu Ogawa, Yoshi-Ichiro Kamijo, Kiwamu Takahashi, Motowo Nakajima, Hiroshi Nose
Depressive patients often experience difficulty in performing exercise due to physical and psychological barriers. We examined the effects of 5-aminolevulinic acid (ALA) with sodium ferrous citrate (SFC) supplementation during home-based walking training in middle-aged depressive women. Nine outpatients [53 ± 8 (SD) yr] with major depressive disorder participated in the pilot study with randomized, placebo-controlled, double-blind crossover design. They underwent two trials for 7 days, each performing interval walking training (IWT) with ALA + SFC (ALA + SFC) or placebo supplement intake (PLC) intermittently with >a 10-day washout period...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29737540/5-ala-in-the-management-of-malignant-glioma
#13
REVIEW
Herbert Stepp, Walter Stummer
BACKGROUND: Patients suffering from malignant gliomas have a poor prognosis. For the surgical treatment of these tumors, 5-aminolevulinic acid (5-ALA) has become a new standard. AIMS: This review intends to provide an overview over current status, significance, limitations, and future perspectives of 5-ALA based fluorescence guided surgery and photodynamic therapy for brain tumor patients. MATERIALS AND METHODS: From peer reviewed publications on the many aspects connected with this topic, those with potential clinical relevance were selected and put in the context of our own experience...
May 8, 2018: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/29725946/spectrophotometric-photodynamic-diagnosis-of-prostate-cancer-cells-excreted-in-voided-urine-using-5-aminolevulinic-acid
#14
Yasushi Nakai, Makito Miyake, Satoshi Anai, Shunta Hori, Yoshihiro Tatsumi, Yosuke Morizawa, Sayuri Onisi, Nobumichi Tanaka, Kiyohide Fujimoto
To evaluate the feasibility of photodynamic diagnosis using 5-aminolevulinic acid (PDD-ALA) for detection of prostate cancer (PCa) cells in urine samples after prostate massage in patients who were suspected to have PCa. One hundred and eighty-nine patients with abnormal digital rectal examination and/or an elevated prostate-specific antigen (PSA) level who underwent initial prostate biopsy were recruited. After prostate massage, the first 60 mL of voided urine was collected. For PDD-ALA, 50 mL was used. The rest of collected urine was used for polymerase chain reaction (PCR) of PSA and glyceraldehyde 3-phosphate dehydrogenase (GAPDH)...
May 4, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29721068/enhancement-of-cancer-specific-protoporphyrin-ix-fluorescence-by-targeting-oncogenic-ras-mek-pathway
#15
Ema Yoshioka, Vipin Shankar Chelakkot, Maria Licursi, Suzette G Rutihinda, Jayoti Som, Leena Derwish, Justin J King, Theerawat Pongnopparat, Karen Mearow, Mani Larijani, Ann M Dorward, Kensuke Hirasawa
Protoporphyrin IX (PpIX) is an endogenous fluorescent molecule that selectively accumulates in cancer cells treated with the heme precursor 5-aminolevulinic acid (5-ALA). This cancer-specific accumulation of PpIX is used to distinguish tumor from normal tissues in fluorescence-guided surgery (FGS) and to destroy cancer cells by photodynamic therapy (PDT). In this study, we demonstrate that oncogenic Ras/mitogen-activated protein kinase kinase (MEK) pathway can modulate PpIX accumulation in cancer cells. Methods: To identify Ras downstream elements involved in PpIX accumulation, chemical inhibitors were used...
2018: Theranostics
https://www.readbyqxmd.com/read/29709603/photodynamic-therapy-for-hidradenitis-suppurativa-acne-inversa-case-report
#16
Yunjie Zhang, Yuguang Yang, Xianbiao Zou
Hidradenitis suppurativa/acne inversa (HS/AI) is a type of chronic suppurative inflammatory reaction of the hair follicles characterized by recurrent dermal abscesses, sinus tracts and scars. So far, there has not been any prospective study proving the efficacy and safety of photodynamic therapy for the disease. In this report, one case of HS/AI achieved resolution of skin lesions, ulcer healing and disappearance of symptoms after nine treatments with 5-aminolevulinic acid photodynamic therapy (ALA-PDT).
April 27, 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29708549/an-in-vitro-model-to-study-the-effect-of-5-aminolevulinic-acid-mediated-photodynamic-therapy-on-staphylococcus-aureus-biofilm
#17
Ke-Qing Zhao, Yang Wu, Yu-Xi Yi, Si-Jia Feng, Ruo-Yan Wei, Ying Ma, Chun-Quan Zheng, Di Qu
Staphylococcus aureus (S. aureus) is a common human pathogen, which causes pyogenic and systemic infections. S. aureus infections are difficult to eradicate not only due to the emergence of antibiotic-resistant strains but also its ability to form biofilms. Recently, photodynamic therapy (PDT) has been indicated as one of the potential treatments for controlling biofilm infections. However, further studies are required to improve our knowledge of its effect on bacterial biofilms, as well as the underlying mechanisms...
April 16, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29684690/photodynamic-therapy-with-the-use-of-superluminescent-diodes-sled-in-the-treatment-of-actinic-keratosis
#18
Joanna Bartosińska, Katarzyna Wolska, Agnieszka Gerkowicz, Marta Niewiedzioł, Małgorzata Michalska- Jakubus, Małgorzata Komza, Tomasz Klepaczewski, Mirosław Kwaśny, Dorota Krasowska
BACKGROUND: Superluminescent diodes (sLED) appear to be an innovative and promising light source in photodynamic therapy (PDT), especially in actinic keratosis (AK) lesions treatment. AIM: Assessment of tolerability and efficacy of sLED in topical 5-aminolevulinic acid (ALA) PDT of AK lesions. METHODS: 27 patients received ALA PDT with the use of sLED with "soft starter". RESULTS: Tolerability of sLED lamp depended on the treated lesions field (extension) rather than on their thickness...
April 20, 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29684343/crystal-structure-of-a-glutamate-1-semialdehyde-aminomutase-from-pseudomonas-aeruginosa-pao1
#19
Shanshan Li, Xiaorui Lou, Yueyang Xu, Xiaozhen Teng, Shiyou Che, Ruihua Liu, Mark Bartlam
The C5 pathway in bacteria is responsible for the synthesis of 5-aminolevulinic acid, which forms the core skeleton of cofactors required for metabolism. One of the key actors in this pathway is a pyridoxamine-5'-phosphate (PMP)/pyridoxal-5'-phosphate (PLP) dependent enzyme called glutamate-1-semialdehyde aminomutase (GSAM). In this study, we crystallized the expression product of the uncharacterized pa4088 gene from the opportunistic pathogen Pseudomonas aeruginosa PAO1. The resulting high-resolution structure confirms it to be a member of the GSAM family...
April 20, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29683291/daylight-pdt-for-field-cancerization-lessons-from-molecular-biology
#20
Max Rybarski, Lutz Schmitz, Ben Novak, Thomas Dirschka
Actinic keratoses (AKs) represent in-situ squamous cell carcinomas that potentially invade subepidermal structures and may metastasize. Until now, it is unpredictable to determine which AK lesions show this aggressive behaviour. As AKs usually occur in large sun exposed areas, field-directed treatments have become the standard treatment regimen. Among these, conventional photodynamic therapy (cPDT) with 5- aminolaevulinic acid (ALA) or methyl-aminolevulinate (MAL) using red light is particularly effective in the treatment of AKs, but acceptance of the therapy is impaired by severe pain during treatment...
April 19, 2018: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
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