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https://www.readbyqxmd.com/read/29922272/gut-microbiota-markers-in-obese-adolescent-and-adult-patients-age-dependent-differential-patterns
#1
Federica Del Chierico, Francesca Abbatini, Alessandra Russo, Andrea Quagliariello, Sofia Reddel, Danila Capoccia, Romina Caccamo, Stefano Ginanni Corradini, Valerio Nobili, Francesco De Peppo, Bruno Dallapiccola, Frida Leonetti, Gianfranco Silecchia, Lorenza Putignani
Obesity levels, especially in children, have dramatically increased over the last few decades. Recently, several studies highlighted the involvement of gut microbiota in the pathophysiology of obesity. We investigated the composition of gut microbiota in obese adolescents and adults compared to age-matched normal weight (NW) volunteers in order to assemble age- and obesity-related microbiota profiles. The composition of gut microbiota was analyzed by 16S rRNA-based metagenomics. Ecological representations of microbial communities were computed, and univariate, multivariate, and correlation analyses performed on bacterial profiles...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29913093/recent-advances-in-the-etiology-and-treatment-of-burning-mouth-syndrome
#2
A Ritchie, J M Kramer
Burning mouth syndrome (BMS) is a debilitating condition that has a striking female predilection. Although the oral mucosa is normal in appearance, patients with BMS experience oral burning that most commonly localizes to the lips and tongue. BMS is a diagnosis of exclusion, and all underlying pathoses associated with allodynia must be ruled out prior to rendering the diagnosis. The etiopathogenesis of BMS remains poorly understood, and thus patient management is challenging. Data indicate that oral and systemic factors both contribute to the development and persistence of the condition...
June 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29908256/the-protective-effect-of-%C3%AE-lipoic-acid-against-bisphenol-a-induced-neurobehavioral-toxicity
#3
Jasim Khan, Shikha Salhotra, Shahzad Ahmad, Shikha Sharma, Sayed Aliul Hasan Abdi, Basu Dev Banerjee, Suhel Parvez, Sarika Gupta, Sheikh Raisuddin
Bisphenol A (BPA), a well-known xenoestrogen, is ubiquitously utilized in manufacturing of polycarbonated plastics. Convincing evidence suggests that BPA induces neurotoxicity and certain behavioral deficits. α-Lipoic acid (ALA) supplementation has shown protective effect against heart and liver diseases, diabetes, and neurological debility associated with aging. We studied the neuromodulatory effect of ALA against neurotoxicity of BPA in vitro in C8-D1A mouse astrocyte cell line and in vivo in C57BL/6J male mice...
June 13, 2018: Neurochemistry International
https://www.readbyqxmd.com/read/29902489/conserved-functions-of-arabidopsis-mitochondrial-late-acting-maturation-factors-in-the-trafficking-of-iron%C3%A2-sulfur-clusters
#4
Marta A Uzarska, Jonathan Przybyla-Toscano, Farah Spangar, Flavien Zannini, Roland Lill, Ulrich Mühlenhoff, Nicolas Rouhier
Numerous proteins require iron‑sulfur (Fe-S) clusters as cofactors for their function. Their biogenesis is a multi-step process occurring in the cytosol and mitochondria of all eukaryotes and additionally in plastids of photosynthetic eukaryotes. A basic model of Fe-S protein maturation in mitochondria has been obtained based on studies achieved in mammals and yeast, yet some molecular details, especially of the late steps, still require investigation. In particular, the late-acting biogenesis factors in plant mitochondria are poorly understood...
June 11, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29901147/antioxidants-retard-the-ageing-of-mouse-oocytes
#5
Yexing Xian, Lifeng Liang, Shutao Qi, Yingjun Xie, Bing Song, Shuming Ouyang, Yuhuan Xie, Xiaofang Sun, Weihua Wang
The aim of the present study was to verify the effects of heavy metal coupling agents (sodium citrate and EDTA) and antioxidants (acetyl carnitine and lipoic acid) on the number of oocytes, as well as the ageing of mitochondria, chromosomes and spindles in mice. C57BL/6 female mice were randomly classified into four groups (n=12 per group): i) Heavy metal coupling agent; ii) antioxidant; iii) mixed group; and iv) the normal control group. For the treatments, heavy metal coupling agents and antioxidants were added to the drinking water provided to the mice...
June 14, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29885345/systemic-administration-of-%C3%AE-lipoic-acid-suppresses-excitability-of-nociceptive-wide-dynamic-range-neurons-in-rat-spinal-trigeminal-nucleus-caudalis
#6
S Hidaka, Y Kanai, S Takehana, Y Syoji, Y Kubota, N Uotsu, K Yui, Y Shimazu, M Takeda
Although a modulatory role has been reported for α-lipoic acid (LA) on T-type Ca2+ channels in the nervous system, the acute effects of LA in vivo, particularly on nociceptive transmission in the trigeminal system, remain to be determined. The aim of the present study was to investigate whether acute intravenous LA administration to rats attenuates the excitability of wide dynamic range (WDR) spinal trigeminal nucleus caudalis (SpVc) neurons in response to nociceptive and non-nociceptive mechanical stimulation in vivo...
June 6, 2018: Neuroscience Research
https://www.readbyqxmd.com/read/29879626/alpha-lipoic-acid-exerts-antioxidant-effect-via-nrf2-ho-1-pathway-activation-and-suppresses-hepatic-stellate-cells-activation-induced-by-methotrexate-in-rats
#7
Ahmed M Fayez, Soad Zakaria, Dina Moustafa
Hepatic injury is a major side effect associated with methotrexate (MTX) therapy resulting from inflammatory reactions and oxidative stress induction. Therefore, liver fibrosis incidence is augmented with long-term MTX therapy. Alpha lipoic acid (ALA) is a naturally occurring compound with potent antioxidant activity. This study explored the hepatoprotective mechanisms of ALA against MTX-induced hepatic injury in rats. Hepatic injury was induced in MTX group by 20 mg/kg body weight ip. injection of MTX. ALA group was pretreated with ALA 60 mmol/kg body weight ip...
June 4, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29867476/lipoic-acid-and-progesterone-alone-or-in-combination-ameliorate-retinal-degeneration-in-an-experimental-model-of-hereditary-retinal-degeneration
#8
Dolores T Ramírez-Lamelas, Soledad Benlloch-Navarro, Rosa López-Pedrajas, Roberto Gimeno-Hernández, Teresa Olivar, Dolores Silvestre, María Miranda
Retinitis pigmentosa (RP) is a group of inherited retinopathies characterized by photoreceptors death. Our group has shown the positive progesterone (P4) actions on cell death progression in an experimental model of RP. In an effort to enhance the beneficial effects of P4, the aim of this study was to combine P4 treatment with an antioxidant [lipoic acid (LA)] in the rd1 mice. rd1 and control mice were treated with 100 mg/kg body weight of P4, LA, or a combination of both on postnatal day 7 (PN7), 9, and 11, and were sacrificed at PN11...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29864270/photoresponsive-micelle-incorporated-doxorubicin-for-chemo-photodynamic-therapy-to-achieve-synergistic-antitumor-effects
#9
Da Hye Kim, Hee Sook Hwang, Kun Na
A combination of chemo-photodynamic therapy has been manifested as a promising strategy for efficient cancer treatment due to the enhanced therapeutic efficacy. Here, we designed doxorubicin (DOX)-loaded photoresponsive micelles (DPRMs) based on a combination of chlorin e6 (Ce6) and lipoic acid (LA) conjugated methoxy-poly(ethylene) glycol (mPEG-Ce6, mPEG-LA) to achieve effective drug delivery using a single system. DPRMs were optimized with different molar ratios of mPEG-Ce6 and mPEG-LA which showed uniformly spherical morphology of size ~130 nm and approximately 9% of DOX loading contents...
June 4, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29861723/synergistic-effect-of-quercetin-and-%C3%AE-lipoic-acid-on-aluminium-chloride-induced-neurotoxicity-in-rats
#10
Sooad Saud Al-Otaibi, Maha Mohamad Arafah, Bechan Sharma, Abdullah Salih Alhomida, Nikhat Jamal Siddiqi
Objectives: The present study was carried out to study the protective effects of quercetin and α -lipoic acid alone and in combination against aluminum chloride induced neurotoxicity in rats. Materials and Methods: The study consisted of eight groups, namely, Group 1: control rats, Group 2: rats receiving aluminium chloride 7 mg/kg body weight intraperitoneal route (i.p) for two weeks, Group 3: rats receiving quercetin 50 mg/kg body weight i.p. for two weeks, Group 4: rats receiving quercetin 50 mg/kg body weight followed by aluminium chloride 7 mg/kg body weight i...
2018: Journal of Toxicology
https://www.readbyqxmd.com/read/29851341/cyclic-thiosulfinates-and-cyclic-disulfides-selectively-crosslink-thiols-while-avoiding-modification-of-lone-thiols
#11
Daniel P Donnelly, Matthew G Dowgiallo, Joseph P Salisbury, Krishna C Aluri, Suhasini Iyengar, Meenal Chaudhari, Merlit Mathew, Isabella Miele, Jared R Auclair, Steven A Lopez, Roman Manetsch, Jeffrey N Agar
This work addresses the need for chemical tools that can selectively form crosslinks. Contemporary thiol-selective crosslinkers, for example, modify all accessible thiols, but only form crosslinks between a subset. The resulting terminal "dead-end" modifications of lone thiols are toxic, confound crosslinking-based studies of macromolecular structure, and are an undesired-and currently unavoidable-byproduct in polymer synthesis. Using the thiol pair of Cu/Zn-superoxide dismutase (SOD1) we demonstrated that cyclic disulfides-including the drug/nutritional supplement lipoic acid-efficiently crosslinked thiol pairs but avoided dead-end modifications...
May 31, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29842900/%C3%AE-lipoic-acid-attenuates-oxidative-stress-and-neurotoxicity-via-the-erk-akt-dependent-pathway-in-the-mutant-hsod1-related-drosophila-model-and-the-nsc34-cell-line-of-amyotrophic-lateral-sclerosis
#12
Tianhang Wang, Jiling Cheng, Shuyu Wang, Xudong Wang, Hongquan Jiang, Yueqing Yang, Ying Wang, Chunting Zhang, Weiwei Liang, Honglin Feng
Amyotrophic lateral sclerosis (ALS) is a degenerative disease with a progressive loss of motor neurons in the central nervous system (CNS). However, there are unsolved problems with the therapies for this disease. α-Lipoic acid (LA) is a natural, universal antioxidant capable of scavenging hydroxyl radicals as well as regenerating a series of antioxidant enzymes that has been widely used in clinical settings. This study aimed to evaluate the antioxidant and neuroprotective effects of LA in ALS cell and Drosophila models with mutant G85R and G93A hSOD1 genes...
May 26, 2018: Brain Research Bulletin
https://www.readbyqxmd.com/read/29802942/%C3%AE-lipoic-acid-inhibits-the-migration-and-invasion-of-breast-cancer-cells-through-inhibition-of-tgf%C3%AE-signaling
#13
Joytirmay Tripathy, Anindita Tripathy, Muthusamy Thangaraju, Mrutyunjay Suar, Selvakumar Elangovan
AIMS: Invasion and metastasis are the main cause of mortality in breast cancer. Hence, novel therapeutic interventions with high specificity toward invasion and metastasis are necessary. α-Lipoic acid showed antiproliferative and cytotoxic effects on several cancers including breast cancer. However, the effect of lipoic acid on breast cancer metastasis remains unclear. MAIN METHODS: In the present study, we examined the effects of lipoic acid on the migration and invasion of MDA-MB-231 and 4 T1 breast cancer cells...
May 23, 2018: Life Sciences
https://www.readbyqxmd.com/read/29793311/the-protective-effects-of-alpha-lipoic-acid-on-methotrexate-induced-testis-injury-in-rats
#14
Neslihan Pınar, Gökhan Çakırca, Tümay Özgür, Mahir Kaplan
Methotrexate (MTX) is frequently used in the treatment of several diseases including cancers, rheumatoid arthritis, psoriatic arthritis, systemic lupus erythematosus, and dermatomyositis. Previously, chemotherapeutic agents have been reported to cause permanent azoospermia and infertility in men. Methotrexate has been also shown to damage the seminiferous tubules of the testicles, lower the sperm count, and cause genetic mutations (in DNA) in sperm. In this study, we aimed to investigate the protective effects of alpha lipoic acid (ALA) on MTX-induced testicle damage in a rat model...
January 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29775948/novel-3-phenylcoumarin-lipoic-acid-conjugates-as-multi-functional-agents-for-potential-treatment-of-alzheimer-s-disease
#15
Leili Jalili-Baleh, Hamid Nadri, Hamid Forootanfar, Alireza Samzadeh-Kermani, Tuba Tüylü Küçükkılınç, Beyza Ayazgok, Mahban Rahimifard, Maryam Baeeri, Mohsen Doostmohammadi, Loghman Firoozpour, Syed Nasir Abbas Bukhari, Mohammad Abdollahi, Mohammad Reza Ganjali, Saeed Emami, Mehdi Khoobi, Alireza Foroumadi
New series of triazole-containing 3-phenylcoumarin-lipoic acid conjugates were designed as multi-functional agents for treatment of Alzheimer's disease. The target compounds 4a-o were synthesized via the azide-alkyne cycloaddition reaction and their biological activities were primarily evaluated in terms of neuroprotection against H2 O2 -induced cell death in PC12 cells and AChE/BuChE inhibition. The promising compounds 4j and 4i containing four carbons spacer were selected for further biological evaluations...
May 2, 2018: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29767723/isca1-mutation-in-a-patient-with-infantile-onset-leukodystrophy-causes-defects-in-mitochondrial-4fe-4s-proteins
#16
Alessandra Torraco, Oliver Stehling, Claudia Stümpfig, Ralf Rösser, Domenico De Rasmo, Giuseppe Fiermonte, Daniela Verrigni, Teresa Rizza, Angelo Vozza, Michela Di Nottia, Daria Diodato, Diego Martinelli, Fiorella Piemonte, Carlo Dionisi-Vici, Enrico Bertini, Roland Lill, Rosalba Carrozzo
Multiple Mitochondrial Dysfunction Syndromes (MMDS) comprise a group of severe autosomal recessive diseases characterized by impaired respiration and lipoic acid metabolism, resulting in infantile-onset mitochondrial encephalopathy, non-ketotic hyperglycinemia, myopathy, lactic acidosis and early death. Four different MMDS have been analyzed in detail according to the genes involved in the disease, MMDS1 (NFU1), MMDS2 (BOLA3), MMDS3 (IBA57), and MMDS4 (ISCA2). MMDS5 has recently been described in a clinical case report of patients carrying a mutation in ISCA1, but with no further functional analysis...
May 14, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29766165/effects-of-epa-and-lipoic-acid-supplementation-on-circulating-fgf21-and-the-fatty-acid-profile-in-overweight-obese-women-following-a-hypocaloric-diet
#17
Xavier Escoté, Elisa Félix-Soriano, Lucía Gayoso, Ana Elsa Huerta, María Antonella Alvarado, Diana Ansorena, Iciar Astiasarán, J Alfredo Martínez, María Jesús Moreno-Aliaga
FGF21 has emerged as a key metabolism and energy homeostasis regulator. Dietary supplementation with eicosapentaenoic acid (EPA) and/or α-lipoic acid (LIP) has shown beneficial effects on obesity. In this study, we evaluated EPA and/or LIP effects on plasma FGF21 and the fatty acid (FA) profile in overweight/obese women following hypocaloric diets. At the baseline, FGF21 levels were negatively related to the AST/ALT ratio and HMW adiponectin. The weight loss did not cause any significant changes in FGF21 levels, but after the intervention FGF21 increased in EPA-supplemented groups compared to non-EPA-supplemented groups...
May 16, 2018: Food & Function
https://www.readbyqxmd.com/read/29765495/effect-of-the-antioxidant-lipoic-acid-in-aortic-phenotype-in-a-marfan-syndrome-mouse-model
#18
Maria C Guido, Victor Debbas, Vera M Salemi, Elaine R Tavares, Thayna Meirelles, Thaís L S Araujo, Patricia Nolasco, Julio C A Ferreira-Filho, Celso K Takimura, Lygia V Pereira, Francisco R Laurindo
Marfan syndrome (MFS) cardiovascular manifestations such as aortic aneurysms and cardiomyopathy carry substantial morbidity/mortality. We investigated the effects of lipoic acid, an antioxidant, on ROS production and aortic remodeling in a MFS mgΔloxPneo mouse model. MFS and WT (wild-type) 1-month-old mice were allocated to 3 groups: untreated, treated with losartan, and treated with lipoic acid. At 6 months old, echocardiography, ROS production, and morphological analysis of aortas were performed. Aortic ROS generation in 6-month-old MFS animals was higher at advanced stages of disease in MFS...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29763808/design-synthesis-and-evaluation-of-novel-multi-target-directed-ligands-for-treatment-of-alzheimer-s-disease-based-on-coumarin-and-lipoic-acid-scaffolds
#19
Leili Jalili-Baleh, Hamid Forootanfar, Tuba Tüylü Küçükkılınç, Hamid Nadri, Zahra Abdolahi, Alieh Ameri, Mandana Jafari, Beyza Ayazgok, Maryam Baeeri, Mahban Rahimifard, Syed Nasir Abbas Bukhari, Mohammad Abdollahi, Mohammad Reza Ganjali, Saeed Emami, Mehdi Khoobi, Alireza Foroumadi
A novel series of coumarin-lipoic acid conjugates were synthesized via cycloaddition click reaction to find out new multi-target-directed ligands (MTDLs) for treatment of Alzheimer's disease (AD). All of synthesized compounds were screened for neuroprotective and anti-cholinesterase activities. Based on primary screening, two compounds (5 and 11) were subjected to further biological evaluations. In particular, compound 11 which was the most potent AChE inhibitor showed good inhibitory effect on Aβ-aggregation and intracellular ROS (reactive oxygen species) formation, as well as the ability of selective bio-metal chelation and neuroprotection against H2 O2 - and Aβ1-42 -induced cytotoxicity...
May 2, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29760339/the-potential-antifibrotic-impact-of-apocynin-and-alpha-lipoic-acid-in-concanavalin-a-induced-liver-fibrosis-in-rats-role-of-nadph-oxidases-1-and-4
#20
Mostafa R Fayed, Reem N El-Naga, El-Sayed Akool, Ebtehal El-Demerdash
Liver fibrosis results from chronic inflammation that precipitates excessive accumulation of extracellular matrix. Oxidative stress is involved in its pathogenesis. This study aimed to elucidate the potential antifibrotic effect of the NADPH oxidase (NOX) inhibitor, apocynin against concanavalin A (ConA)-induced immunological model of liver fibrosis, and to investigate the ability of the antioxidant, alpha-lipoic acid (α-LA) to potentiate this effect. Rats were treated with apocynin and/or α-LA for six weeks...
2018: Drug Discoveries & Therapeutics
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