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Jeff Wong, Leo d'Espaux, Ishaan Dev, Cas van der Horst, Jay Keasling
Valeriana officinalis (Valerian) root extracts have been used by European and Asian cultures for millennia for their anxiolytic and sedative properties. However, the efficacy of these extracts suffers from variable yields and composition, making these extracts a prime candidate for microbial production. Recently, valerenic acid, a C15 sesquiterpenoid, was identified as the active compound that modulates the GABAA channel. Although the first committed step, valerena-4,7(11)-diene synthase, has been identified and described, the complete valerenic acid biosynthetic pathway remains to be elucidated...
March 12, 2018: Metabolic Engineering
Valériane Dujardin
No abstract text is available yet for this article.
March 2018: Revue de L'infirmière
Kara Wools-Kaloustian, Irene Marete, Samuel Ayaya, Annette H Sohn, Lam Van Nguyen, Shanshan Li, Valériane Leroy, Beverly S Musick, Jamie E Newman, Andrew Edmonds, Mary-Ann Davies, François Tanoh Eboua, Marie-Thérèse Obama, Marcel Yotebieng, Shobna Sawry, Lynne M Mofenson, Constantin T Yiannoutsos
BACKGROUND: Globally, 49% of the estimated 1.8 million children living with HIV are accessing antiretroviral therapy (ART). There are limited data concerning long-term durability of first-line ART regimens and time to transition to second-line. METHODS: Children initiating their first ART regimen between 2-14 years of age and enrolled in one of 208 sites in 30 Asia-Pacific and African countries participating in the Pediatric International Epidemiology Databases to Evaluate AIDS consortium were included in this analysis...
March 2, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
Amy L Slogrove, Michael Schomaker, Mary-Ann Davies, Paige Williams, Suna Balkan, Jihane Ben-Farhat, Nancy Calles, Kulkanya Chokephaibulkit, Charlotte Duff, Tanoh François Eboua, Adeodata Kekitiinwa-Rukyalekere, Nicola Maxwell, Jorge Pinto, George Seage, Chloe A Teasdale, Sebastian Wanless, Josiane Warszawski, Kara Wools-Kaloustian, Marcel Yotebieng, Venessa Timmerman, Intira J Collins, Ruth Goodall, Colette Smith, Kunjal Patel, Mary Paul, Diana Gibb, Rachel Vreeman, Elaine J Abrams, Rohan Hazra, Russell Van Dyke, Linda-Gail Bekker, Lynne Mofenson, Marissa Vicari, Shaffiq Essajee, Martina Penazzato, Gabriel Anabwani, Edith Q Mohapi, Peter N Kazembe, Makhosazana Hlatshwayo, Mwita Lumumba, Tessa Goetghebuer, Claire Thorne, Luisa Galli, Annemarie van Rossum, Carlo Giaquinto, Magdalena Marczynska, Laura Marques, Filipa Prata, Luminita Ene, Liubov Okhonskaia, Pablo Rojo, Claudia Fortuny, Lars Naver, Christoph Rudin, Sophie Le Coeur, Alla Volokha, Vanessa Rouzier, Regina Succi, Annette Sohn, Azar Kariminia, Andrew Edmonds, Patricia Lelo, Samuel Ayaya, Patricia Ongwen, Laura F Jefferys, Sam Phiri, Mwangelwa Mubiana-Mbewe, Shobna Sawry, Lorna Renner, Mariam Sylla, Mark J Abzug, Myron Levin, James Oleske, Miriam Chernoff, Shirley Traite, Murli Purswani, Ellen G Chadwick, Ali Judd, Valériane Leroy
BACKGROUND: Globally, the population of adolescents living with perinatally acquired HIV (APHs) continues to expand. In this study, we pooled data from observational pediatric HIV cohorts and cohort networks, allowing comparisons of adolescents with perinatally acquired HIV in "real-life" settings across multiple regions. We describe the geographic and temporal characteristics and mortality outcomes of APHs across multiple regions, including South America and the Caribbean, North America, Europe, sub-Saharan Africa, and South and Southeast Asia...
March 2018: PLoS Medicine
Christine E Gilmartin, To-Hao Vo-Tran, Laura Leung
Background The use of oral complementary and alternative medicines, including herbal supplements, has been increasing in pregnant women worldwide despite limited safety data. The decision of healthcare professionals to recommend these products to pregnant patients is controversial and not well documented. Objective To explore the recommendations and information sources that healthcare professionals use to determine the safety of oral non-prescribed supplements during pregnancy. Setting An Australian metropolitan maternity hospital...
February 23, 2018: International Journal of Clinical Pharmacy
Charles D Bell, Lauren A Gonzalez
This study aimed to investigate the phylogenetic utility of genotyping-by-sequencing (GBS) data in the southern South American subclade of Valerianaceae (Dipsacales). The variety of forms that has arisen in this clade, presumably over the past 5-10 million years, has all the signatures of an adaptive and rapid radiation. While the phylogeny of Valerianaceae has received a great deal of attention in the last decade, species relationships have been hard to resolve using traditional phylogenetic markers. Here, we collected high-throughput genomic sequence data from reduced-representation libraries obtained through GBS protocols...
February 19, 2018: Molecular Phylogenetics and Evolution
Désiré Dahourou, Jean-Philippe Raynaud, Valériane Leroy
PURPOSE OF REVIEW: Improved access to antiretroviral therapy has resulted in an emerging population of adolescents living with HIV (ALHIV) mainly in sub-Saharan Africa. Full disclosure of an HIV diagnosis includes naming HIV/AIDS and is an important step in coping with HIV. We reviewed the recent trends in the rates of children/adolescents who have been informed of their HIV infection according to age groups, the barriers and the evaluated interventions aimed at improving the HIV disclosure process to ALHIV in sub-Saharan Africa...
February 15, 2018: Current Opinion in HIV and AIDS
Sibylle Meier, Manuel Haschke, Catherine Zahner, Esther Kruttschnitt, Jürgen Drewe, Evangelia Liakoni, Felix Hammann, Jens Gaab
BACKGROUND: Considering the negative effects of stress on health, there is a growing interest in stress-reducing interventions. The present study examines the effects of a fixed combination of valerian, passion flower, lemon balm, and butterbur extracts (Ze 185) on biological and affective responses to a standardized psychosocial stress paradigm. PURPOSE: The aim of the present study was to investigate the efficacy of Ze 185 on cortisol and anxiety stress responses to acute psychosocial stress in healthy subjects...
January 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
Eugene V Koonin, Valerian V Dolja
No abstract text is available yet for this article.
February 15, 2018: Virus Research
Julie Jesson, Désiré L Dahourou, Madeleine Amorissani Folquet, Karen Malateste, Caroline Yonaba, Marie-Sylvie N'Gbeche, Sylvie Ouédraogo, Véronique Mea-Assande, Clarisse Amani-Bossé, Stéphane Blanche, Marguerite Timité-Konan, Valériane Leroy
BACKGROUND: There is limited information about malnutrition, growth evolution and metabolic changes among children initiated early on lopinavir-based antiretroviral therapy (ART) in Africa. METHODS: HIV-1-infected children, age <2 years were initiated on ART, as part of the MONOD ANRS 12206 project, conducted in Burkina Faso and Côte d'Ivoire. Weight-for-age, height-for-age and weight-for-height Z-scores (WAZ, HAZ, WHZ) defined malnutrition (Z-score <-2 standard deviations [SD]) using WHO growth references...
February 3, 2018: Pediatric Infectious Disease Journal
Sophie Bouton, Valérian Chambon, Rémi Tyrand, Adrian G Guggisberg, Margitta Seeck, Sami Karkar, Dimitri van de Ville, Anne-Lise Giraud
Percepts and words can be decoded from distributed neural activity measures. However, the existence of widespread representations might conflict with the more classical notions of hierarchical processing and efficient coding, which are especially relevant in speech processing. Using fMRI and magnetoencephalography during syllable identification, we show that sensory and decisional activity colocalize to a restricted part of the posterior superior temporal gyrus (pSTG). Next, using intracortical recordings, we demonstrate that early and focal neural activity in this region distinguishes correct from incorrect decisions and can be machine-decoded to classify syllables...
January 23, 2018: Proceedings of the National Academy of Sciences of the United States of America
Jungyoon Kim, Suji L Lee, Ilhyang Kang, Youme A Song, Jiyoung Ma, Young Sun Hong, Shinwon Park, Seog In Moon, Soojeong Kim, Semi Jeong, Jieun E Kim
Insufficient sleep, insomnia, and sleep-related problems are important health issues, as their overall prevalence accounts for about 30% of the general population. The aim of this study was to systematically review previous studies investigating the effects of orally administered single plant-derived extracts on sleep-related outcomes in humans. Data sources were PubMed, Google Scholar, and Cochrane Library. The data search was conducted in two steps: step 1, names of plants which have been studied as sleep aids in humans were searched and retrieved; and step 2, each ingredient listed in step 1 was then added into the search term...
January 22, 2018: Journal of Medicinal Food
Juliet Otiti-Sengeri, Robert Colebunders, Steven J Reynolds, Musa Muwonge, Getrude Nakigozi, Valerian Kiggundu, Fred Nalugoda, Damalie Nakanjako
BACKGROUND: Cataracts occur earlier among HIV-infected adults and this is attributed to various intraocular inflammatory processes that result in early degeneration. In this study we purposed to investigate whether HIV infected individuals with cataracts develop heightened intraocular inflammatory processes compared to their HIV negative counterparts by determining the concentration of 8 cytokines in the aqueous humour of HIV-positive adults with cataracts and their HIV-negative counterparts...
January 19, 2018: BMC Ophthalmology
Frédéric Rouyer, Fabrice Dami, Olivier Grosgurin, Valériane Rossier, Majd Ramlawi, Mathieu Pasquier, Olivier T Rutschmann
Emergency medicine is part of the current stream of efficient and qualitative medicine : 1) the modified Valsava maneuver results in the resolution of almost 50% of supra-ventricular tachycardia without any drug; 2) lung echography performed by emergency physicians is a very sensitive and specific diagnostic tool for most thoracic emergencies; 3) cardiopulmonary resuscitation initiated by lay-rescuers improves short and long-term outcome; 4) no anticoagulant treatment is warranted in distal deep vein thrombosis and 5) systematic unenhanced abdominal CT might improve evaluation of elderly patients with acute abdominal pain...
January 10, 2018: Revue Médicale Suisse
Yu-Mei He, Xing Li, Michela Perego, Yulia Nefedova, Andrew V Kossenkov, Erik A Jensen, Valerian Kagan, Yu-Feng Liu, Shu-Yu Fu, Qing-Jian Ye, Yan-Hong Zhou, Lai Wei, Dmitry I Gabrilovich, Jie Zhou
Myeloid-derived suppressor cells (MDSCs) are pathologically activated and relatively immature myeloid cells that have been implicated in the immunological regulation of many pathologic conditions. Phenotypically and morphologically, MDSCs are similar to neutrophils (PMN-MDSCs) and monocytes (M-MDSCs). However, they have potent suppressive activity and distinct gene expression profiles and biochemical characteristics. No or very few MDSCs are observed in steady-state physiological conditions. Therefore, until recently, accumulation of MDSCs was considered a consequence of pathological processes or pregnancy...
February 2018: Nature Medicine
Kyungae Jo, SangDuk Jeon, Chang-Won Ahn, Sung Hee Han, Hyung Joo Suh
We evaluated the sleep enhancement activity of the medicinal herbs valerian (Valeriana officinalis), jujube (Ziziphus jujube), lotus seed (Nelumbo nucifera), Gastrodia elata, Polygonatum sibiricum, and baekbokryung (Poria cocos), which can relieve insomnia in a Drosophila model. Locomotor activity was measured in the Drosophila model to evaluate the sleep activity of Korean medicinal herbs traditionally used as sleep aids. The group treated with lotus seed extract showed less nocturnal activity. Treatment with 10 or 20 mg/mL of P...
December 2017: Preventive Nutrition and Food Science
Dariush Mohammadyani, Naveena Yanamala, Alejandro K Samhan Arias, Alexander A Kapralov, German Stepanov, Nick Nuar, Joan Planas-Iglesias, Narinder Sanghera, Valerian E Kagan, Judith Klein-Seetharaman
The interaction between CL and cytochrome c (cyt-c), results in a gain of function of peroxidase activity by cyt-c. Despite intensive research, disagreements on nature and molecular details of this interaction remain. In particular, it is still not known how the interaction triggers the onset of apoptosis. Enzymatic characterization of peroxidase activity has highlighted the need for a critical threshold concentration of CL, a finding of profound physiological relevance in vivo. Using solution NMR, fluorescence spectroscopy, and in silico modeling approaches we here confirm that full binding of cyt-c to the membrane requires a CL:cyt-c threshold ratio of 5:1...
January 6, 2018: Biochimica et Biophysica Acta
Ciprian Bolca, Valerian Păvăloiu, Georgiana Fotache, Mihai Dumitrescu, Andrei Bobocea, Mihai Alexe, Genoveva Cadar, Radu Stoica, Cristian Paleru, Ioan Cordoş
Introduction: Postintubation tracheoesophageal fistula is a severe complication occurring under certain conditions in patients that require prolonged mechanical ventilation. MATERIAL AND METHODS: This article focuses on a sample of 11 patients with postintubation tracheoesophageal fistula, operated in our department between 2005 and 2015. The anterior approach with tracheal resection was performed in 10 of these patients, while an atypical surgical technique was preferred in a case involving a large-sized fistula...
November 2017: Chirurgia
Valérian Gobé, Maxime Dousset, Pascal Retailleau, Vincent Gandon, Xavier Guinchard
N-Allyl tetrahydro-β-carbolines undergo gold-catalyzed cyclizations that lead to tetracyclic compounds, resulting from both ring closure and the transfer of the allylic group from the nitrogen to the carbon backbone. The final skeleton obtained depends on the nature of both the R2 group of the allene and the R3 group of the allylic residue. Mechanistic studies and DFT calculations allowed the determination of all the mechanistic pathways involved in these processes, stemming from a common intermediate that evolves differently according to the substituents nature...
December 18, 2017: Journal of Organic Chemistry
Filippo Veglia, Vladimir A Tyurin, Dariush Mohammadyani, Maria Blasi, Elizabeth K Duperret, Laxminarasimha Donthireddy, Ayumi Hashimoto, Alexandr Kapralov, Andrew Amoscato, Roberto Angelini, Sima Patel, Kevin Alicea-Torres, David Weiner, Maureen E Murphy, Judith Klein-Seetharaman, Esteban Celis, Valerian E Kagan, Dmitry I Gabrilovich
Cross-presentation is a critical function of dendritic cells (DCs) required for induction of antitumor immune responses and success of cancer immunotherapy. It is established that tumor-associated DCs are defective in their ability to cross-present antigens. However, the mechanisms driving these defects are still unknown. We find that impaired cross-presentation in DCs is largely associated with defect in trafficking of peptide-MHC class I (pMHC) complexes to the cell surface. DCs in tumor-bearing hosts accumulate lipid bodies (LB) containing electrophilic oxidatively truncated (ox-tr) lipids...
December 14, 2017: Nature Communications
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