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https://www.readbyqxmd.com/read/28819735/-evaluation-of-the-onsite-malaria-rapid-test-performance-in-miandrivazo-madagascar
#1
E Ravaoarisoa, T Andriamiandranoro, R Raherinjafy, M Jahevitra, S Razanatsiorimalala, V Andrianaranjaka, M Randrianarivelojosia
The performance of the malaria rapid diagnostic test OnSite-for detecting pan specific pLDH and Plasmodium falciparum specific HRP2 - was assessed during the malaria transmission peak period in Miandrivazo, in the southwestern part of Madagascar from April 20 to May 6, 2010. At the laboratory, the quality control OnSite Malaria Rapid Test according to the WHO/TDR/FIND method demonstrated that the test had good sensitivity. Of the 218 OnSite tests performed at the Miandrivazo Primary Health Center on patients with fever or a recent history of fever, four (1...
August 17, 2017: Bulletin de la Société de Pathologie Exotique
https://www.readbyqxmd.com/read/28817228/isolation-of-the-new-antiplasmodial-butanolide-malleastrumolide-a-from-a-malleastrum-sp-meliaceae-from-madagascar
#2
Yongle Du, Alexander K Abedi, Ana Lisa Valenciano, Maria L Fernández-Murga, Maria B Cassera, Vincent E Rasamison, Wendy L Applequist, James S Miller, David G I Kingston
An extract of a Malleastrum sp. (Meliaceae) collected in Madagascar by the Madagascar International Cooperative Biodiversity Group was found to have antimalarial activity, with an IC50 value between 2.5 and 5 μg/mL. After purification by liquid-liquid partition, chromatography on a Diaion open column, C-18 SPE and C-18 reverse phase HPLC, the new butanolide malleastrumolide A was isolated. The structure of malleastrumolide A was determined by mass spectrometry, NMR and ECD. The double bond position was determined by cross-metathesis and mass spectrometry...
August 17, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28814923/nine-species-from-madagascar-are-moved-from-vernonia-to-distephanus-compositae-vernonieae
#3
Vicki A Funk, Harold Robinson
The genus Distephanus is native to Madagascar, the Mauritius, central and southern Africa, Yemen (Socotra Island), and China. The majority of the diversity is found in Madagascar. Here we provide new combinations for nine species of Vernonia that belong in Distephanus, all from Madagascar. All of the species were formerly placed in the large genus Vernonia, now greatly reduced.
2017: PhytoKeys
https://www.readbyqxmd.com/read/28811602/identification-of-ciguatoxins-in-a-shark-involved-in-a-fatal-food-poisoning-in-the-indian-ocean
#4
Jorge Diogène, Laia Reverté, Maria Rambla-Alegre, Vanessa Del Río, Pablo de la Iglesia, Mònica Campàs, Oscar Palacios, Cintia Flores, Josep Caixach, Christian Ralijaona, Iony Razanajatovo, Agathe Pirog, Hélène Magalon, Nathalie Arnich, Jean Turquet
Severe food poisoning events after the consumption of sharks have been reported since the 1940s; however, there has been no clear understanding of their cause. Herein, we report for the first time the presence of ciguatoxins (CTXs) in sharks. The identification by mass spectrometry of CTXs, including two new analogues, in a bull shark (Carcharhinus leucas) that was consumed by humans, causing the poisoning and death of 11 people in Madagascar in 2013 is described. Typical neurotoxic ciguatera symptoms were recorded in patients, and toxicological assays on extracts of the shark demonstrated CTX-like activity...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28809032/a-sensitive-and-versatile-in-situ-hybridization-protocol-for-gene-expression-analysis-in-developing-amniote-brains
#5
Pei-Shan Hou, Takuma Kumamoto, Carina Hanashima
The detection of specific RNA molecules in embryonic tissues has wide research applications including studying gene expression dynamics in brain development and evolution. Recent advances in sequencing technologies have introduced new animal models to explore the molecular principles underlying the assembly and diversification of brain circuits between different amniote species. Here, we provide a step-by-step protocol for a versatile in situ hybridization method that is immediately applicable to a range of amniote embryos including zebra finch and Madagascar ground gecko, two new model organisms that have rapidly emerged for comparative brain studies over recent years...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28806916/assessment-of-tuberculosis-spatial-hotspot-areas-in-antananarivo-madagascar-by-combining-spatial-analysis-and-genotyping
#6
Noël Harijaona Ratovonirina, Niaina Rakotosamimanana, Solohery Lalaina Razafimahatratra, Mamy Serge Raherison, Guislaine Refrégier, Christophe Sola, Fanjasoa Rakotomanana, Voahangy Rasolofo Razanamparany
BACKGROUND: Tuberculosis (TB) remains a public health problem in Madagascar. A crucial element of TB control is the development of an easy and rapid method for the orientation of TB control strategies in the country. Our main objective was to develop a TB spatial hotspot identification method by combining spatial analysis and TB genotyping method in Antananarivo. METHODS: Sputa of new pulmonary TB cases from 20 TB diagnosis and treatment centers (DTCs) in Antananarivo were collected from August 2013 to May 2014 for culture...
August 14, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28801771/morphology-and-ultrastructure-of-the-tarsal-adhesive-organs-of-the-madagascar-hissing-cockroach-gromphadorhina-portentosa
#7
Christian Schmitt, Oliver Betz
The present transmission and scanning electron microscopic study of the ultramorphology of the pliable attachment pads (arolium, euplantulae) of the Madagascar hissing cockroach Gromphadorhina portentosa reveals structural evidence for their function in producing, storing, and secreting an adhesion-mediating secretion and releasing it to the exterior. The exocrine epidermal tissue of both the arolium and the euplantula is significantly enlarged by numerous invaginations stretching into the hemolymph cavity...
August 12, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28797252/evaluation-of-community-based-continuous-distribution-of-long-lasting-insecticide-treated-nets-in-toamasina-ii-district-madagascar
#8
Celine Zegers de Beyl, Albert Kilian, Andrea Brown, Mohamad Sy-Ar, Richmond Ato Selby, Felicien Randriamanantenasoa, Jocelyn Ranaivosoa, Sixte Zigirumugabe, Lilia Gerberg, Megan Fotheringham, Matthew Lynch, Hannah Koenker
BACKGROUND: Continuous distribution of insecticide-treated nets (ITNs) is thought to be an effective mechanism to maintain ITN ownership and access between or in the absence of mass campaigns, but evidence is limited. A community-based ITN distribution pilot was implemented and evaluated in Toamasina II District, Madagascar, to assess this new channel for continuous ITN distribution. METHODS: Beginning 9 months after the December 2012 mass campaign, a community-based distribution pilot ran for an additional 9 months, from September 2013 to June 2014...
August 10, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28792516/profound-and-pervasive-degradation-of-madagascar-s-freshwater-wetlands-and-links-with-biodiversity
#9
Andrew J Bamford, Felix Razafindrajao, Richard P Young, Geoff M Hilton
Reflecting a global trend, freshwater wetlands in Madagascar have received little conservation or research attention. Madagascar is a global conservation priority due to its high level of species endemism but most work has focused on protecting forests. For the first time, we investigated the state of wetlands across the country to determine the effects of human disturbance. We conducted a rapid survey of 37 wetlands, using waterbirds and benthic invertebrates as ecological indicators. We recorded nine variables relating to human disturbance, revealing widespread wetland destruction...
2017: PloS One
https://www.readbyqxmd.com/read/28791661/collecting-near-mature-and-immature-orchid-seeds-for-ex-situ-conservation-in-vitro-collecting-as-a-case-study
#10
Jonathan P Kendon, Landy Rajaovelona, Helen Sandford, Rui Fang, Jake Bell, Viswambharan Sarasan
BACKGROUND: Lack of phenological information and efficient collecting methods are considered impediments for orchid seed collecting. This leads to opportunistic collecting as part of general seed collecting schedules that may last few weeks especially in remote areas. The study explored the feasibility of collecting near mature and immature seeds to support conservation action plans. Mature, near mature and immature seeds of orchids were collected from the wild in the Central Highlands of Madagascar (CHM)...
August 8, 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28790867/cervical-cancer-screening-in-low-resource-settings-a-smartphone-image-application-as-an-alternative-to-colposcopy
#11
Caroline Gallay, Anne Girardet, Manuela Viviano, Rosa Catarino, Anne-Caroline Benski, Phuong Lien Tran, Christophe Ecabert, Jean-Philippe Thiran, Pierre Vassilakos, Patrick Petignat
BACKGROUND: Visual inspection after application of acetic acid (VIA) and Lugol's iodine (VILI) is a cervical cancer (CC) screening approach that has recently been adopted in low- and middle-income countries (LMIC). Innovative technologies allow the acquisition of consecutive cervical images of VIA and VILI using a smartphone application. The aim of this study was to evaluate the quality of smartphone images in order to assess the feasibility and usability of a mobile application for CC screening in LMIC...
2017: International Journal of Women's Health
https://www.readbyqxmd.com/read/28780454/nicotinamide-antioxidative-and-dna-hypomethylation-effects-in-plant-cells
#12
Torkel Berglund, Anders Wallström, Tuong-Van Nguyen, Cecilia Laurell, Anna B Ohlsson
The effects of nicotinamide (NIC) and its natural plant metabolites nicotinic acid (NIA) and trigonelline (TRIG) were studied with respect to defense in plant cell cultures. NIC and NIA could protect against oxidative stress damage caused by 2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH), which generates free radicals. Damage was analyzed as DNA strand breaks in cell cultures of Pisum sativum (garden pea), Daucus carota (carrot), Populus tremula L. × P. tremuloides (hybrid aspen) and Catharanthus roseus (Madagascar periwinkle), monitored by single cell gel electrophoresis (comet assay), and assays of cell leakage in C...
July 29, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28770075/tropical-soils-degraded-by-slash-and-burn-cultivation-can-be-recultivated-when-amended-with-ashes-and-compost
#13
Justine Marie Gay-des-Combes, Clara Sanz Carrillo, Bjorn Jozef Maria Robroek, Vincent Eric Jules Jassey, Robert Thomas Edmund Mills, Muhammad Saleem Arif, Leia Falquet, Emmanuel Frossard, Alexandre Buttler
In many tropical regions, slash-and-burn agriculture is considered as a driver of deforestation; the forest is converted into agricultural land by cutting and burning the trees. However, the fields are abandoned after few years because of yield decrease and weed invasion. Consequently, new surfaces are regularly cleared from the primary forest. We propose a reclamation strategy for abandoned fields allowing and sustaining re-cultivation. In the dry region of south-western Madagascar, we tested, according to a split-plot design, an alternative selective slash-and-burn cultivation technique coupled with compost amendment on 30-year-old abandoned fields...
July 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28769722/taxonomic-revision-of-imitating-carpenter-ants-camponotus-subgenus-myrmopytia-hymenoptera-formicidae-of-madagascar-using-morphometry-and-qualitative-traits
#14
Nicole Rasoamanana, Sándor Csősz, Brian L Fisher
The ant genus Camponotus (Mayr, 1861) is one of the most abundant and species rich ant genera in the Malagasy zoogeographical region. Although this group is commonly encountered, its taxonomy is far from complete. Here, we clarify the taxonomy of the Malagasy-endemic Camponotus subgenus Myrmopytia (Emery, 1920). Species delimitation was based on traditional morphological characters and multivariate morphometric analyses, including exploratory Nest Centroid clustering and confirmatory cross-validated Linear Discriminant Analysis...
2017: ZooKeys
https://www.readbyqxmd.com/read/28761787/a-mutualism-without-honeydew-what-benefits-for-melissotarsus-emeryi-ants-and-armored-scale-insects-diaspididae
#15
Christian Peeters, Imre Foldi, Danièle Matile-Ferrero, Brian L Fisher
Mutualisms between ants and sap-sucking insects generally involve clear benefits for both partners: the ants provide protection in exchange for honeydew. However, a single ant genus associates with armoured scale insects (Diaspididae) that do not excrete honeydew. We studied three colonies of Melissotarsus emeryi ants from two localities in Mozambique. Vast numbers of the diaspidid Morganella conspicua occupied galleries dug by the ants under the bark of living trees. Unlike free-living M. conspicua and other diaspidids, M...
2017: PeerJ
https://www.readbyqxmd.com/read/28750867/west-nile-virus-infection-in-horses-indian-ocean
#16
E Cardinale, C Bernard, S Lecollinet, V M Rakotoharinome, J Ravaomanana, M Roger, M M Olive, D Meenowa, M R Jaumally, J Melanie, J M Héraud, S Zientara, C Cêtre-Sossah
The circulation of West Nile virus (WNV) in horses was investigated in the Southwest Indian ocean. In 2010, blood samples were collected from a total of 303 horses originating from Madagascar, Mauritius, Reunion and the Seychelles and tested for WNV-specific antibodies. An overall seroprevalence of 27.39% was detected in the Indian Ocean with the highest WNV antibody prevalence of 46.22% (95% CI: [37.4-55.2%]) in Madagascar. The age and origin of the horses were found to be associated with the WNV infection risk...
August 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28749772/plasmodium-vivax-infections-over-3-years-in-duffy-blood-group-negative-malians-in-bandiagara-mali
#17
Amadou Niangaly, Karthigayan Gunalan, Amed Ouattara, Drissa Coulibaly, Juliana M Sá, Matthew Adams, Mark A Travassos, Jennifer Ferrero, Matthew B Laurens, Abdoulaye K Kone, Mahamadou A Thera, Christopher V Plowe, Louis H Miller, Ogobara K Doumbo
Plasmodium vivax was thought to infect only the erythrocytes of Duffy blood group positive people. In the last decade, P. vivax has appeared throughout Africa, both in areas where Duffy positive and negative people live side by side as in Madagascar and Ethiopia and in areas where people are primarily Duffy negative, such as in western Kenya. We performed quantitative polymerase chain reaction on blood samples dried onto filter paper to determine the prevalence of P. vivax and Plasmodium falciparum in a cohort of 300 children (newborn to 6 years of age) in Bandiagara, a Sahelian area of Mali, west Africa, where the people are Duffy negative...
July 24, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28749276/obstetrical-and-postpartum-complications-in-lesser-madagascar-hedgehog-tenrecs-echinops-telfairi-four-cases
#18
Kimberly A Thompson, Dalen Agnew, Sally A Nofs, Tara M Harrison
Currently, little is known about diseases and health concerns in tenrecs, family Tenrecidae. During the past 10 yr of breeding lesser Madagascar hedgehog tenrecs ( Echinops telfairi ) at a single zoological institution, a diverse range of obstetric and postpartum complications have been observed: pyometra, metritis, retained fetal membranes, retained fetus, perinatal mortality, and maternal neglect with subsequent successful hand-rearing of neonates. Treatment of these problems is complicated in tenrecs because of their small size and secretive behavior...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28748011/-intraoperative-management-of-esophageal-atresia-small-steps-that-cannot-be-ignored-in-madagascar
#19
Harifetra Mamy Richard Randriamizao, Aurélia Rakotondrainibe, Nadia Marie Philibertine Rahanitriniaina, Andriambelo Tovohery Rajaonera, Mamy Lalatiana Andriamanarivo
The management of esophageal atresia is still limited due to the precariousness of technical equipments in Madagascar. Our case study aims to highlight possible therapeutic options and to describe the progresses to be made so as to optimize treatment of this congenital pathology. We collected the medical records of all patients hospitalized for esophageal atresia in the Department of Surgical Reanimation at the University Hospital-JRA Antananarivo. The first patients admitted who survived for a period of 42 months (between January 2011 and June 2014) were included in the study...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28740461/down-for-the-count-cryptosporidium-infection-depletes-the-gut-microbiome-in-coquerel-s-sifakas
#20
Erin A McKenney, Lydia K Greene, Christine M Drea, Anne D Yoder
Background: The gut microbiome (GMB) is the first line of defense against enteric pathogens, which are a leading cause of disease and mortality worldwide. One such pathogen, the protozoan Cryptosporidium, causes a variety of digestive disorders that can be devastating and even lethal. The Coquerel's sifaka (Propithecus coquereli) - an endangered, folivorous primate endemic to Madagascar - is precariously susceptible to cryptosporidiosis under captive conditions. If left untreated, infection can rapidly advance to morbidity and death...
2017: Microbial Ecology in Health and Disease
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