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https://www.readbyqxmd.com/read/28545253/encapsulation-of-the-antioxidant-r-%C3%AE-lipoic-acid-in-permethylated-%C3%AE-and-%C3%AE-cyclodextrins-thermal-and-x-ray-structural-characterization-of-the-1-1-inclusion-complexes
#1
Mino R Caira, Susan A Bourne, Buntubonke Mzondo
The naturally occurring compound α-lipoic acid (ALA) is implicated in manifold critical biological roles and its potent antioxidant properties and potential for treatment of various diseases have led to its widespread use as a dietary supplement. However, shortcomings of poor aqueous solubility and low thermal stability have hampered its development as a medicinal agent, prompting the use of cyclodextrins (CDs) to address these problems. The paucity of published structural data on the nature of the interactions between ALA and CDs motivated the present study, which describes the synthesis and X-ray structural elucidation of crystalline inclusion complexes between the biologically relevant R-(+)-α-lipoic acid (RALA) and the host molecules permethylated α-CD (TMA) and permethylated β-CD (TMB)...
May 23, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28541026/advances-in-the-management-of-diabetic-neuropathy
#2
Tamás Várkonyi, Anna Körei, Zsuzsanna Putz, Tímea Martos, Katalin Keresztes, Csaba Lengyel, Szabolcs Nyiraty, Alin Stirban, György Jermendy, Péter Kempler
The authors review current advances in the therapy of diabetic neuropathy. The role of glycaemic control and management of cardiovascular risk factors in the prevention and treatment of neuropathic complications are discussed. As further options of pathogenetic ally oriented treatment, recent knowledge on benfotiamine and alpha-lipoic acid is comprehensively reviewed. Alpha-lipoic acid is a powerful antioxidant and clinical trials have proven its efficacy in ameliorating neuropathic signs and symptoms. Benfotiamine acts via the activation of transketolase and thereby inhibits alternative pathways triggered by uncontrolled glucose influx in the cells comprising polyol, hexosamine, protein-kinase-C pathways and formation of advanced glycation end products...
May 25, 2017: Minerva Medica
https://www.readbyqxmd.com/read/28540381/lipoic-acid-based-core-cross-linked-micelles-for-multivalent-platforms-design-synthesis-and-application-in-bio-imaging-and-drug-delivery
#3
Jingsheng Huang, Fang Wu, Yunlong Yu, Haolong Huang, Shiyong Zhang, Jingsong You
Natural lipoic acid derived small-molecule amphiphiles self-assemble into micelles in water. The presence of numerous disulfides accumulated in the core makes the micelles readily cross-linked to achieve the establishment of core cross-linked micelles (CCMs). Thanks to the inherent biocompatibility, the resulting lipoic acid based CCMs (LA-CCMs) are good multivalent platforms for biomedical applications.
May 25, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28537012/nutraceutical-effects-on-glucose-and-lipid-metabolism-in-patients-with-impaired-fasting-glucose-a-pilot-double-blind-placebo-controlled-randomized-clinical-trial-on-a-combined-product
#4
Arrigo Francesco Giuseppe Cicero, Federica Fogacci, Martino Morbini, Alessandro Colletti, Marilisa Bove, Maddalena Veronesi, Marina Giovannini, Claudio Borghi
INTRODUCTION: A number of natural compounds have individually demonstrated to improve glucose and lipid levels in humans. AIM: To  evaluate the short-term glucose and lipid-lowering activity in subjects with impaired fasting glucose. METHODS: To assess the effects of a combination of nutraceuticals based on Lagerstroemia speciosa, Berberis aristata, Curcuma longa, Alpha-lipoic acid, Chrome picolinate and Folic acid, we performed a double-blind, parallel group, placebo-controlled, randomized clinical trial in 40 adults affected by impaired fasting glucose (FPG = 100-125 mg/dL) in primary prevention of cardiovascular disease...
May 23, 2017: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/28533572/%C3%AE-lipoic-acid-mitigates-arsenic-induced-hematological-abnormalities-in-adult-male-rats
#5
Sonali Ghosh, Raghwendra Mishra, Sagnik Biswas, Rupak K Bhadra, Prabir K Mukhopadhyay
BACKGROUND: Arsenic toxicity is a major global health problem and exposure via contaminated drinking water has been associated with hematological and other systemic disorders. The present investigation has been conducted in adult male rats to evaluate the protective ability of α-lipoic acid (ALA) against such hematological disorders. METHODS: Twenty-four adult male Wister rats (b.wt.130±10g) were grouped and accordingly group I (control) received the normal diet, group II (treated) was given arsenic orally for 28 consecutive days as arsenic trioxide (3 mg/kgbw/rat/day) whereas group III (supplemented) received the same dose of arsenic along with ALA (25 mg/kgbw/rat/day) as oral supplement...
May 2017: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28533333/pgc-1%C3%AE-peroxisome-proliferator-activated-receptor-%C3%AE-coactivator-1-%C3%AE-overexpression-in-coronary-artery-disease-recruits-no-and-hydrogen-peroxide-during-flow-mediated-dilation-and-protects-against-increased-intraluminal-pressure
#6
Andrew O Kadlec, Dawid S Chabowski, Karima Ait-Aissa, Joseph C Hockenberry, Mary F Otterson, Matthew J Durand, Julie K Freed, Andreas M Beyer, David D Gutterman
Blood flow through healthy human vessels releases NO to produce vasodilation, whereas in patients with coronary artery disease (CAD), the mediator of dilation transitions to mitochondria-derived hydrogen peroxide (mtH2O2). Excessive mtH2O2 production contributes to a proatherosclerotic vascular milieu. Loss of PGC-1α (peroxisome proliferator-activated receptor γ coactivator 1α) is implicated in the pathogenesis of CAD. We hypothesized that PGC-1α suppresses mtH2O2 production to reestablish NO-mediated dilation in isolated vessels from patients with CAD...
May 22, 2017: Hypertension
https://www.readbyqxmd.com/read/28528322/very-low-doses-of-heavy-oxygen-ion-radiation-induce-premature-ovarian-failure
#7
Birendra Mishra, Ryan Ripperdan, Laura Ortiz, Ulrike Luderer
Astronauts are exposed to charged particles during space travel, and charged particles are also used for cancer radiotherapy. Premature ovarian failure is a well-known side-effect of conventional, low linear energy transfer (LET) cancer radiotherapy, but little is known about the effects of high LET charged particles on the ovary. We hypothesized that lower LET (16.5 keV/µm) oxygen particles would be less damaging to the ovary than we previously found for iron (LET=179 keV/µm). Adult female mice were irradiated with 0, 5, 30, or 50 cGy oxygen ions or 50 cGy oxygen plus dietary supplementation with the antioxidant alpha lipoic acid (ALA)...
May 20, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28527067/usefulness-of-nutraceuticals-in-migraine-prophylaxis
#8
Florindo D'Onofrio, Simona Raimo, Daniele Spitaleri, Gerardo Casucci, Gennaro Bussone
Several studies have supported the efficacy of complementary and alternative medicine approaches (physical, behavioral and nutraceutical therapies) in the treatment of headache disorders. Nutraceutical treatment consists of taking vitamins, supplements (magnesium, riboflavin, coenzyme Q10, and alpha lipoic acid) and herbal preparations (feverfew and butterbur), and its usage is frequently determined by dissatisfaction with conventional medical therapies. There is a growing body of research on nutraceutical use for migraine prophylaxis...
May 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28521187/brain-antioxidant-effect-of-mirtazapine-and-reversal-of-sedation-by-its-combination-with-alpha-lipoic-acid-in-a-model-of-depression-induced-by-corticosterone
#9
Tatiana de Queiroz Oliveira, Caren Nádia Soares de Sousa, Germana Silva Vasconcelos, Luciene Costa de Sousa, Anneheydi Araújo de Oliveira, Cláudio Felipe Vasconcelos Patrocínio, Ingridy da Silva Medeiros, José Eduardo Ribeiro Honório Júnior, Michael Maes, Danielle Macedo, Silvânia Maria Mendes Vasconcelos
BACKGROUND: Depression is accompanied by activated neuro-oxidative and neuro-nitrosative pathways, while targeting these pathways has clinical efficacy in depression. This study aimed to investigate the effects of mirtazapine (MIRT) alone and combined with alpha-lipoic acid (ALA) against corticosterone (CORT) induced behavioral and oxidative alterations. METHODS: Male mice received vehicle or CORT 20mg/kg during 14 days. From the 15th to 21st days they were divided in groups administered: vehicle, MIRT 3mg/kg or the combinations MIRT+ALA100 or MIRT+ALA200...
May 11, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28512366/-effect-of-%C3%AE-lipoic-acid-on-free-radical-processes-in-serum-of-rats-on-high-fat-diet
#10
Marcin Cichoń, Urszula Błaszczyk, Jolanta Zalejska-Fiolka
BACKGROUND: Oils are often fried which reduces their beneficial biological and nutritional properties, contributing to disturbances in homeostasis. Some antioxidant substances can improve stability of oils. The aim of the study was to examine the effect of α-lipoic acid (ALA) on the concentration of sulfhydryl groups, lipid peroxides, malondialdehyde, creatinine and urea in serum of rats fed high fat diet for 3 months. MATERIAL AND METHODS: Thirty six Wistar rats were equally divided into 6 groups: the control group on standard breeding diet (SB), oxidized oil (OU) group on SB with 10% oxidized oil, ALA10 group on SB with ALA 10 mg/kg of body weight (b...
May 16, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/28504843/a-novel-synthetic-chemical-entity-upei-800-is-neuroprotective-in-vitro-and-in-an-in-vivo-rat-model-of-oxidative-stress
#11
Tarek M Saleh, Monique C Saleh, Barry J Connell, Inan Kucukkaya, Alaa S Abd-El-Aziz
In this study, we tested a novel synthetic pyrazole-containing compound, 5-amino-1-phenyl-1H-pyrazole-4-carbonitrile (APPC), as an antioxidant in both in vitro and in vivo models of oxidative stress. In addition, the utility of covalently combining APPC with another well-established antioxidant, lipoic acid (LA), was also tested in both models. The in vitro results demonstrated that pretreatment with APPC in a mixed neuronal-glial culture exposed to oxygen-glucose deprivation (OGD) followed by reoxygenation-refeeding, resulted in significant neuroprotection at concentrations between 2...
May 15, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28498557/preparation-of-ultrathin-two-dimensional-tixta1-xsyoz-nanosheets-as-highly-efficient-photothermal-agents
#12
Hua Zhang, Chaoliang Tan, Lingzhi Zhao, Peng Yu, Ying Huang, Bo Chen, Zhuangchai Lai, Xiaoying Qi, Min Hao Goh, Xiao Zhang, Shikui Han, Xue-Jun Wu, Zheng Liu, Yanli Zhao
High-yield preparation of solution-processed ultrathin 2D metal oxide/sulfide hybrid nanosheets, i.e. TixTa1-xSyOz (x=0.71, 0.49, 0.30), was reported via our developed electrochemical Li-intercalation method using TixTa1-xS2 layered bulk crystals as precursors. The obtained TixTa1-xSyOz nanosheets are composed of amorphous metal oxide and metal sulfide components containing a few crystalline TixTa1-xS2 domains. The Ti0.71Ta0.29SyOz nanosheet exhibits strong absorbance at the near-infrared regime, giving large extinction coefficient of 54...
May 12, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28497200/effect-of-lipoic-acid-on-the-biochemical-mechanisms-of-resistance-to-bortezomib-in-sh-sy5y-neuroblastoma-cells
#13
Daniele Tibullo, Cesarina Giallongo, Fabrizio Puglisi, Daniele Tomassoni, Giuseppina Camiolo, Martina Cristaldi, Maria Violetta Brundo, Carmelina Daniela Anfuso, Gabriella Lupo, Tomaso Stampone, Giovanni Li Volti, Francesco Amenta, Roberto Avola, Vincenzo Bramanti
Neuroblastoma (NB) is an extracranial solid cancer and the most common cancer in infancy. Despite the standard treatment for NB is based on the combination of chemotherapeutic drugs such as doxorubicin, vincristine, cyclophosphamide, and cisplatin, chemoresistance occurs over the time. The aim of the present research was to evaluate the effect of bortezomib (BTZ) (50 nM) on NB cell viability and how lipoic acid (ALA) (100 μM) modifies pharmacological response to this chemotherapeutic agent. Cell viability was assessed by ATP luminescence assay whereas expression of oxidative stress marker (i...
May 11, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28485941/soft-ultraviolet-uv-photopatterning-and-metallization-of-self-assembled-monolayers-sams-formed-from-the-lipoic-acid-ester-of-%C3%AE-hydroxy-1-acetylpyrene-the-generality-of-acid-catalyzed-removal-of-thiol-on-gold-sams-using-soft-uv-light
#14
Laurynas Pukenas, Panida Prompinit, Boda Nishitha, Daniel J Tate, N D Pradeep Singh, Christoph Wälti, Stephen D Evans, Richard J Bushby
Under a layer of 0.1 M HCl in isopropanol, soft ultraviolet (UV) (365 nm) photolysis of the thiol-on-gold self-assembled monolayer (SAM) derived from the lipoic acid ester of α-hydroxy-1-acetylpyrene results in the expected removal of the acetylpyrene protecting group. When photolyzing through a mask, this can be used to produce a patterned surface and, at a controlled electrochemical potential, it is then possible to selectively and reversibly electrodeposit copper on the photolyzed regions. Rather surprisingly, under these photolysis conditions, there is not only the expected photodeprotection of the ester but also partial removal of the lipoic acid layer which has been formed...
May 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28480405/potential-administration-of-lipoic-acid-and-coenzyme-q-against-adipogensis-target-for-weight-reduction
#15
Maryam A Al-Ghamdi, Hani Choudhry, Huda A Al-Doghather, Etimad H Huwait, Taha A Kumosani, Said S Moselhy
BACKGROUND: Body overweight and obesity were considered as a risk factor for many systemic diseases as diabetic hypertension, cardiovascular diseases, and some cancers. The lipoic acid and Co Q are considered as coenzymes needed for enhancement metabolic rate. The goal of this study is to evaluate the anti-obese effect of lipoic acid alone or combined with Co-Q in rats. MATERIALS AND METHODS: Ninety male albino rats (100-150g) were used in this study, divided into six groups (15 each)...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28476051/impaired-corneal-sensation-and-nerve-loss-in-a-type-2-rat-model-of-chronic-diabetes-is-reversible-with-combination-therapy-of-menhaden-oil-%C3%AE-lipoic-acid-and-enalapril
#16
Eric P Davidson, Lawrence J Coppey, Hanna Shevalye, Alexander Obrosov, Randy H Kardon, Mark A Yorek
PURPOSE: This study investigated the efficacy of monotherapy versus combination of menhaden oil, α-lipoic acid, and enalapril on corneal sensation and morphometry and other neuropathy-related endpoints in a rat model of type 2 diabetes. METHODS: Male Sprague-Dawley rats (aged 12 weeks) were fed a high-fat diet for 8 weeks followed by 30 mg/kg streptozotocin. After 16 weeks of hyperglycemia, 12-week treatments consisting of menhaden oil, α-lipoic acid, enalapril, or their combination were initiated...
June 2017: Cornea
https://www.readbyqxmd.com/read/28470667/autoreactive-monoclonal-antibodies-from-patients-with-primary-biliary-cholangitis-recognize-environmental-xenobiotics
#17
Toshihiro Tanaka, Weici Zhang, Ying Sun, Zongwen Shuai, Asiya Chida, Thomas P Kenny, Guo-Xiang Yang, Ignacio Sanz, Aftab Ansai, Christopher L Bowlus, Gregory C Ippolito, Ross L Coppel, Kazuichi Okazaki, Xiao-Song He, Patrick S C Leung, M Eric Gershwin
A major problem in autoimmunity has been identification of the earliest events that lead to breach of tolerance. Although there have been major advances in dissecting effector pathways and the multi-lineage immune responses to mitochondrial self-antigens in primary biliary cholangitis (PBC), the critical links between environmental factors and tolerance remain elusive. We hypothesized that environmental xenobiotic modification of the E2 subunit of the pyruvate dehydrogenase (PDC-E2) inner lipoyl domain can lead to loss of tolerance to genetically susceptible hosts...
May 3, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28447384/alpha-lipoic-acid-an-inimitable-feed-supplement-for-poultry-nutrition
#18
REVIEW
M Sohaib, F M Anjum, M Nasir, F Saeed, M S Arshad, S Hussain
Alpha-lipoic acid (ALA) is a multifunction antioxidant that is produced in small amount by cells as well as its dietary provision facilitates fatty acid mobilization, energy expenditure as well as can scavenge free radicals in poultry birds. It exists in oxidized as well as reduced form, characterized by growth promoting, anti-inflammatory, antioxidative, immunostimulatory, and hypocholesterolemic properties when fed as dietary supplement to farm animals particularly chicken birds. Recently, several studies reported that dietary supplementation of ALA can influence growth performance indicators, immunological, biochemical characteristics, lipid metabolism, and oxidative stress as well as increase antioxidant potential and storability of poultry meat and meat products...
April 26, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28441474/dendrimer-modified-mos2-nanoflakes-as-a-platform-for-combinational-gene-silencing-and-photothermal-therapy-of-tumors
#19
Lingdan Kong, Lingxi Xing, Benqing Zhou, Lianfang Du, Xiangyang Shi
Exploitation of novel hybrid nanomaterials for combinational tumor therapy is challenging. In this work, we synthesized dendrimer-modified MoS2 nanoflakes for combinational gene silencing and photothermal therapy (PTT) of cancer cells. Hydrothermally synthesized MoS2 nanoflakes were modified with generation 5 (G5) poly(amidoamine) dendrimers partially functionalized with lipoic acid via disulfide bond. The formed G5-MoS2 nanoflakes display good colloidal stability and superior photothermal conversion efficiency and photothermal stability...
May 1, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28434274/myoinositol-combined-with-alpha-lipoic-acid-may-improve-the-clinical-and-endocrine-features-of-polycystic-ovary-syndrome-through-an-insulin-independent-action
#20
Simona De Cicco, Valentina Immediata, Daniela Romualdi, Caterina Policola, Anna Tropea, Christian Di Florio, Valeria Tagliaferri, Elisa Scarinci, Silvia Della Casa, Antonio Lanzone, Rosanna Apa
The aim of our study was to investigate the effects of a combined treatment with alpha-lipoic acid (ALA) and myoinositol (MYO) on clinical, endocrine and metabolic features of women affected by polycystic ovary syndrome (PCOS). In this pilot cohort study, forty women with PCOS were enrolled and clinical, hormonal and metabolic parameters were evaluated before and after a six-months combined treatment with ALA and MYO daily. Studied patients experienced a significant increase in the number of cycles in six months (p < 0...
April 23, 2017: Gynecological Endocrinology
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