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Daniela Elgueta, María S Aymerich, Francisco Contreras, Andro Montoya, Marta Celorrio, Estefanía Rojo-Bustamante, Eduardo Riquelme, Hugo González, Mónica Vásquez, Rafael Franco, Rodrigo Pacheco
Neuroinflammation involves the activation of glial cells, which is associated to the progression of neurodegeneration in Parkinson's disease. Recently, we and other researchers demonstrated that dopamine receptor D3 (D3R)-deficient mice are completely refractory to neuroinflammation and consequent neurodegeneration associated to the acute intoxication with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). In this study we examined the therapeutic potential and underlying mechanism of a D3R-selective antagonist, PG01037, in mice intoxicated with a chronic regime of administration of MPTP and probenecid (MPTPp)...
September 28, 2016: Neuropharmacology
Junnan Xu, Yueqin Ma, Yuanbiao Xie, Yingchong Chen, Yang Liu, Pengfei Yue, Ming Yang
Poorly water-soluble drugs offer challenges in developing a formulation product with adequate bioavailability. This study took advantage of the features of nanocrystals and direct compression technologies to develop a novel solid self-nanodispersion delivery system for andrographolide (Andro) in order to increase its dissolution rate for enhancing bioavailability. Andro nanosuspensions (Andro-NS) with a particle size of about 500 nm were prepared by homogenization technology and further converted into dried nanocrystal particles (Andro-NP) via spray-drying...
September 12, 2016: AAPS PharmSciTech
Richard J Servatius, Christine E Marx, Swamini Sinha, Pelin Avcu, Jason D Kilts, Jennifer C Naylor, Kevin C H Pang
Exposure to lateral fluid percussion (LFP) injury consistent with mild traumatic brain injury (mTBI) persistently attenuates acoustic startle responses (ASRs) in rats. Here, we examined whether the experience of head trauma affects stress reactivity. Male Sprague-Dawley rats were matched for ASRs and randomly assigned to receive mTBI through LFP or experience a sham surgery (SHAM). ASRs were measured post injury days (PIDs) 1, 3, 7, 14, 21, and 28. To assess neurosteroids, rats received a single 2.0 mA, 0.5 s foot shock on PID 34 (S34), PID 35 (S35), on both days (2S), or the experimental context (CON)...
2016: Frontiers in Neuroscience
Fuben Xu, Huayu Wu, Kun Zhang, Peizhen Lv, Li Zheng, Jinmin Zhao
Nerve regeneration remains a challenge to the treatment of peripheral nerve injury. Andrographolide (Andro) is the main active constituent of Andrographis paniculata, which has been applied in the treatment of several diseases, including inflammation, in ancient China. Andro has been reported to facilitate the reduction of edema and to exert analgesic effects in the treatment of various diseases. These findings suggest that Andro may be considered a promising anti‑inflammatory agent that may suppress destruction and accelerate proliferation of Schwann cells following peripheral nerve injury...
October 2016: Molecular Medicine Reports
Hsia-Lien Lin, Haoming Zhang, Cesar Kenaan, Paul F Hollenberg
The crystal structures of human CYP2B6 indicate that Phe206 and Val367 are in close proximity to the substrate binding site and suggest that both residues may play important roles in substrate metabolism and inhibitor binding. To test this hypothesis, we investigated the effects of mutating these residues to Ala on the regiospecificity of CYP2B6 for the metabolism of testosterone and androstenedione. For testosterone metabolism, 16β-OH-testosterone formation by the F206A mutant was <5% of the wild type (WT), whereas the V367A mutant exhibited a doubling of 16α-OH-testosterone formation with a 50% decrease in 16β-OH-testosterone formation compared with the WT...
November 2016: Drug Metabolism and Disposition: the Biological Fate of Chemicals
Renata Orłowska, Joanna Machczyńska, Sylwia Oleszczuk, Janusz Zimny, Piotr Tomasz Bednarek
BACKGROUND: In vitro plant regeneration via androgenesis or somatic embryogenesis is capable of inducing (epi)mutations that may affect sexual progenies. While epimutations are associated with DNA methylation, mutations could be due to the movement of transposons. The common notion is that both processes are linked. It is being assumed that demethylation activates transposable elements (TEs). Analysis of methylation changes and their relation with TEs activation in tissue cultures requires uniquely derived donor plants (Ds), their regenerants (Rs) and respective progeny (Ps) that would allow discrimination of processes not related to changes introduced via in vitro cultures...
December 2016: Journal of Biological Research
Daniela S Rivera, Carolina Lindsay, Juan Francisco Codocedo, Isidora Morel, Claudio Pinto, Pedro Cisternas, Francisco Bozinovic, Nibaldo C Inestrosa
The social species Octodon degus (degu) is the only wild-type South American rodent that develops Alzheimer's-like pathology with age. Here, we evaluated the ability of a natural product (Andrographolide, ANDRO), a diterpene of the labdane family obtained from the Asian plant Andrographis paniculata, to recover the cognitive decline in this long-lived animal model. We administered ANDRO to aged degus (56-month old) for 3 months. In addition, in 2 control groups (young degus: 12-month old and aged degus: 56-month old), we administrated saline solution as a vehicle...
October 2016: Neurobiology of Aging
Andros Tofield
No abstract text is available yet for this article.
December 21, 2015: European Heart Journal
Gwénäelle Andro
The perinatal psychology and psychiatry unit of Caen university hospital has put in place two systematic intervention protocols relating to pregnancy: teenage pregnancy and denial of pregnancy. Professionals are particularly concerned with teenagers with a history of early emotional deprivation and mistreatment, with the spectre of repetition. A partnership with a motherhood centre helps all concerned to work together to build resilience.
July 2016: Soins. Pédiatrie, Puériculture
Z Donarelli, G Lo Coco, S Gullo, L Salerno, A Marino, F Sammartano, A Allegra
STUDY QUESTION: Is the Fertility Quality of Life Questionnaire (FertiQoL)-Relational Scale a valid measure to assess the relational domain regarding quality of life in women and men undergoing infertility treatment? SUMMARY ANSWER: The FertiQoL-Relational scale (FertiQoL-REL) showed good psychometric properties and captured core aspects of couple relationships. WHAT IS KNOWN ALREADY: FertiQoL has become a gold standard for the assessment of infertility-related quality of life in patients undergoing assisted reproduction treatment (ART)...
September 2016: Human Reproduction
Dingkun Zhang, Junzhi Lin, Fang Zhang, Xue Han, Li Han, Ming Yang, Wenquan Zou
BACKGROUND: Andrographolide (Andro) is a "natural antibiotic" as well as a typical insoluble drug. The purpose of this study was to investigate the feasibility of commercially available silica (SiO2) as a carrier of solid dispersion to enhance the dissolution of Andro. MATERIALS AND METHODS: The solvent evaporation method was adopted, and a series of process parameters were studied to prepare a solid dispersion. Andro, SiO2, physical mixture, and solid dispersion were characterized with respect to particle size distribution, special surface area, pore volume, and scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction studies...
May 2016: Pharmacognosy Magazine
Fenli Shao, Tao Tan, Yang Tan, Yang Sun, Xingxin Wu, Qiang Xu
Psoriasis is a chronic inflammatory skin disease with excessive activation of toll-like receptors (TLRs), which play important roles in developing psoriasis. Targeting TLR signaling remains a challenge for treating psoriasis. Here, we found that andrographolide (Andro), a small-molecule natural product, alleviated imiquimod- but not interleukin 23 (IL-23)-induced psoriasis in mice with reducing expressions of IL-23 and IL-1β in the skin. The improvement in imiquimod-induced psoriasis by Andro was not observed in microtubule-associated protein 1 light chain 3 beta (MAP1LC3B) knockout mice...
September 1, 2016: Biochemical Pharmacology
George Cooper, Andro C Rios
Biological polymers such as nucleic acids and proteins are constructed of only one-the d or l-of the two possible nonsuperimposable mirror images (enantiomers) of selected organic compounds. However, before the advent of life, it is generally assumed that chemical reactions produced 50:50 (racemic) mixtures of enantiomers, as evidenced by common abiotic laboratory syntheses. Carbonaceous meteorites contain clues to prebiotic chemistry because they preserve a record of some of the Solar System's earliest (∼4...
June 14, 2016: Proceedings of the National Academy of Sciences of the United States of America
Béla Clemens, Szilvia Puskás, Mónika Besenyei, István Kondákor, Katalin Hollódy, Andrós Fogarasi, Katalin Bense, Miklós Emri, Opposits Gábor, Noémi Zsuzsanna Kovács, István Fekete
BACKGROUND: Contemporary neuroimaging methods disclosed structural and functional cerebral abnormalities in idiopathic generalized epilepsies (IGEs). However, individual electrical (EEG) abnormalities have not been evaluated yet in IGE patients. METHODS: IGE patients were investigated in the drug-free condition and after 3-6 month of antiepileptic treatment. To estimate the reproducibility of qEEG variables a retrospective recruited cohort of IGE patients was investigated...
March 30, 2016: Ideggyógyászati Szemle
Bin Lu, Yuchen Sheng, Jiaqi Zhang, Zhiyong Zheng, Lili Ji
BACKGROUND: MicroRNAs (miRNAs) have been reported to play critical roles in regulating gene expression in tumor development. Natural compound andrographolide (Andro), isolated from medicinal herb Andrographis paniculata, was reported to inhibit hepatoma tumor growth in our previous studies. The present study aims to observe the altered miRNAs profile and related signaling pathways involved in Andro-induced inhibition on hepatoma tumor growth. RESULTS: The inhibition on hepatoma tumor growth induced by Andro (10mg/kg) was found in a xenograft mouse tumor model in vivo...
August 22, 2016: Gene
Huihui Yuan, Bo Sun, Feng Gao, Minbo Lan
CONTEXT: Paclitaxel (PTX) is widely used in chemotherapy for cancer treatment; however, it has some serious side effects. Andrographolide (Andro) is a potential cancer therapeutic agent isolated from Andrographis paniculata (Burm. f.) Nees (Acanthaceae). OBJECTIVE: The objective of this study is to evaluate the effects of PTX combined with Andro against A549 cells. MATERIALS AND METHODS: The effects of 24-48 h treatment with 0.48-60.75 nM PTX and 5...
May 9, 2016: Pharmaceutical Biology
Tingfang Yang, Shuluan Yao, Xianfeng Zhang, Yan Guo
T-cell acute lymphoblastic leukemia (T-ALL) as a prevalent hematologic malignancy is one of the most common malignant tumors worldwide in children. Andrographolide (Andro), the major active component from Andrographis paniculata, has been shown to possess antitumor activities in several types of cancer cells. However, whether Andro would inhibit T-ALL cell growth remains unclear. In this study, we investigated the cytotoxic effect of Andro on human T-ALL Jurkat cells and explored the mechanisms of cell death...
2016: Drug Design, Development and Therapy
Andros T Gianuca, Jelena H Pantel, Luc De Meester
A negative consequence of biodiversity loss is reduced rates of ecosystem functions. Phylogenetic-based biodiversity indices have been claimed to provide more accurate predictions of ecosystem functioning than species diversity alone. This approach assumes that the most relevant traits for ecosystem functioning present a phylogenetic signal. Yet, traits-mediating niche partitioning and resource uptake efficiency in animals can be labile. To assess the relative power of a key trait (body size) and phylogeny to predict zooplankton top-down control on phytoplankton, we manipulated trait and phylogenetic distances independently in microcosms while holding species richness constant...
April 13, 2016: Proceedings. Biological Sciences
Ya-Hsin Hsu, Yu-Ling Hsu, Sheng-Hung Liu, Hsin-Chia Liao, Po-Xuan Lee, Chao-Hsiung Lin, Lee-Chiang Lo, Shu-Ling Fu
Andrographolide (ANDRO) is a lactone diterpenoid compound present in the medicinal plant Andrographis paniculata which is clinically applied for multiple human diseases in Asia and Europe. The pharmacological activities of andrographolide have been widely demonstrated, including anti-inflammation, anti-cancer and hepatoprotection. However, the pharmacological mechanism of andrographolide remains unclear. Therefore, further characterization on the kinetics and molecular targets of andrographolide is essential...
2016: PloS One
Kathryn E Lafond, Harish Nair, Mohammad Hafiz Rasooly, Fátima Valente, Robert Booy, Mahmudur Rahman, Paul Kitsutani, Hongjie Yu, Guiselle Guzman, Daouda Coulibaly, Julio Armero, Daddi Jima, Stephen R C Howie, William Ampofo, Ricardo Mena, Mandeep Chadha, Ondri Dwi Sampurno, Gideon O Emukule, Zuridin Nurmatov, Andrew Corwin, Jean Michel Heraud, Daniel E Noyola, Radu Cojocaru, Pagbajabyn Nymadawa, Amal Barakat, Adebayo Adedeji, Marta von Horoch, Remigio Olveda, Thierry Nyatanyi, Marietjie Venter, Vida Mmbaga, Malinee Chittaganpitch, Tran Hien Nguyen, Andros Theo, Melissa Whaley, Eduardo Azziz-Baumgartner, Joseph Bresee, Harry Campbell, Marc-Alain Widdowson
BACKGROUND: The global burden of pediatric severe respiratory illness is substantial, and influenza viruses contribute to this burden. Systematic surveillance and testing for influenza among hospitalized children has expanded globally over the past decade. However, only a fraction of the data has been used to estimate influenza burden. In this analysis, we use surveillance data to provide an estimate of influenza-associated hospitalizations among children worldwide. METHODS AND FINDINGS: We aggregated data from a systematic review (n = 108) and surveillance platforms (n = 37) to calculate a pooled estimate of the proportion of samples collected from children hospitalized with respiratory illnesses and positive for influenza by age group (<6 mo, <1 y, <2 y, <5 y, 5-17 y, and <18 y)...
March 2016: PLoS Medicine
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